Yotsunoha (English Wikipedia)

"List of Tatomu's work on ErogameScape" (in Japanese). ErogameScape. Archived from the original on January 15, 2008. Retrieved January 4, 2015.
"List of Keikei's work on ErogameScape" (in Japanese). ErogameScape. Archived from the original on January 15, 2008. Retrieved January 4, 2015.

drabbit.net (Global: low place; English: low place)

"A list of Yotsunoha related downloads" (in Japanese). Archived from the original on May 5, 2008. Retrieved May 10, 2008.

getchu.com (Global: 9,455^th place; English: low place)

"Getchu.com's January 2006 sales ranking" (in Japanese). Getchu.com. Retrieved May 18, 2008.
"Getchu.com's Q1 and Q2 2006 sales ranking" (in Japanese). Getchu.com. Retrieved May 18, 2008.

iam-hiquality.com (Global: low place; English: low place)

4leaf.iam-hiquality.com

"An introduction to the gameplay system of Yotsunoha" (in Japanese). Haikuo Soft. Archived from the original on May 1, 2008. Retrieved May 10, 2008.
"A list of staff members and specifications of Yotsunoha" (in Japanese). Haikuo Soft. Archived from the original on May 1, 2008. Retrieved May 10, 2008.
"Official website of the first Drama CD adaptation of Yotsunoha" (in Japanese). Haikuo Soft. Archived from the original on May 9, 2008. Retrieved May 12, 2008.
"A list of Yotsunoha related downloads at the official website" (in Japanese). Haikuo Soft. Archived from the original on May 6, 2008. Retrieved May 12, 2008.

iam-hiquality.com

"Information on a patch for the limited edition of Yotsunoha" (in Japanese). Haikuo Soft. Retrieved May 11, 2008.

marine-e.co.jp (Global: low place; English: low place)

"Official website of the second Drama CD adaptation of Yotsunoha" (in Japanese). Marine Entertainment. Archived from the original on February 20, 2008. Retrieved May 12, 2008.

peakspub.co.jp (Global: low place; English: low place)

"全国美少女ソフト売り上げランキング TOP50" [National Bishōjo Software Sales Ranking Top 50]. PC News (in Japanese). No. 188. 16–31 January 2005. Archived from the original on April 12, 2007. Retrieved 9 July 2018.
"全国美少女ソフト売り上げランキング TOP50" [National Bishōjo Software Sales Ranking Top 50]. PC News (in Japanese). No. 189. 1–15 February 2005. Archived from the original on 9 September 2006. Retrieved 9 July 2018.

solpress.co (Global: low place; English: low place)

"New Licenses along with a New Website!". Sol Press. April 11, 2018. Archived from the original on April 12, 2018. Retrieved April 11, 2018.

team-e.co.jp (Global: low place; English: low place)

"Information on the "Soon/Love Rice" maxi single" (in Japanese). Team Entertainment. Archived from the original on June 8, 2008. Retrieved July 21, 2008.

web.archive.org (Global: 1^st place; English: 1^st place)

"Information on the PS2 version of Yotsunoha on the specification page of its website" (in Japanese). Gadget Soft. Archived from the original on May 13, 2008. Retrieved May 10, 2008.
"Staff and cast page on the official website of the OVA Yotsunoha" (in Japanese). Archived from the original on May 13, 2008. Retrieved May 10, 2008.
"An introduction to the gameplay system of Yotsunoha" (in Japanese). Haikuo Soft. Archived from the original on May 1, 2008. Retrieved May 10, 2008.
"Official website of the PS2 version of Yotsunoha" (in Japanese). Gadget Soft. Archived from the original on May 17, 2008. Retrieved May 20, 2008.
"List of Tatomu's work on ErogameScape" (in Japanese). ErogameScape. Archived from the original on January 15, 2008. Retrieved January 4, 2015.
"List of Keikei's work on ErogameScape" (in Japanese). ErogameScape. Archived from the original on January 15, 2008. Retrieved January 4, 2015.
"A list of staff members and specifications of Yotsunoha" (in Japanese). Haikuo Soft. Archived from the original on May 1, 2008. Retrieved May 10, 2008.
"A list of Yotsunoha related downloads" (in Japanese). Archived from the original on May 5, 2008. Retrieved May 10, 2008.
"Information on Yotsunoha: A Journey of Sincerity's release delay" (in Japanese). Gadget Soft. Archived from the original on July 28, 2008. Retrieved July 21, 2008.
"New Licenses along with a New Website!". Sol Press. April 11, 2018. Archived from the original on April 12, 2018. Retrieved April 11, 2018.
"Official website of the first Drama CD adaptation of Yotsunoha" (in Japanese). Haikuo Soft. Archived from the original on May 9, 2008. Retrieved May 12, 2008.
"Official website of the second Drama CD adaptation of Yotsunoha" (in Japanese). Marine Entertainment. Archived from the original on February 20, 2008. Retrieved May 12, 2008.
"Yotsunoha OVA for 2008 in production" (in Japanese). Animate. Archived from the original on October 21, 2008. Retrieved May 11, 2008.
"Information on the DVDs on the official website of the OVA Yotsunoha" (in Japanese). Archived from the original on March 13, 2008. Retrieved May 11, 2008.
"A list of Yotsunoha related downloads at the official website" (in Japanese). Haikuo Soft. Archived from the original on May 6, 2008. Retrieved May 12, 2008.
"A list of CDs attributed to the OVA version of Yotsunoha at its official website" (in Japanese). Archived from the original on May 13, 2008. Retrieved May 12, 2008.
"Information on the "Soon/Love Rice" maxi single" (in Japanese). Team Entertainment. Archived from the original on June 8, 2008. Retrieved July 21, 2008.
"全国美少女ソフト売り上げランキング TOP50" [National Bishōjo Software Sales Ranking Top 50]. PC News (in Japanese). No. 188. 16–31 January 2005. Archived from the original on April 12, 2007. Retrieved 9 July 2018.
"全国美少女ソフト売り上げランキング TOP50" [National Bishōjo Software Sales Ranking Top 50]. PC News (in Japanese). No. 189. 1–15 February 2005. Archived from the original on 9 September 2006. Retrieved 9 July 2018.

yotsunoha.com (Global: low place; English: low place)

"Staff and cast page on the official website of the OVA Yotsunoha" (in Japanese). Archived from the original on May 13, 2008. Retrieved May 10, 2008.
"Information on the DVDs on the official website of the OVA Yotsunoha" (in Japanese). Archived from the original on March 13, 2008. Retrieved May 11, 2008.
"A list of CDs attributed to the OVA version of Yotsunoha at its official website" (in Japanese). Archived from the original on May 13, 2008. Retrieved May 12, 2008.

Yotsunoha (English Wikipedia)

acgateway.com (Global: low place; English: low place)

animate.tv (Global: low place; English: low place)

animenewsnetwork.com (Global: 51st place; English: 46th place)

ddo.jp (Global: low place; English: low place)

erogamescape.ddo.jp

drabbit.net (Global: low place; English: low place)

getchu.com (Global: 9,455th place; English: low place)

iam-hiquality.com (Global: low place; English: low place)

4leaf.iam-hiquality.com

iam-hiquality.com

marine-e.co.jp (Global: low place; English: low place)

peakspub.co.jp (Global: low place; English: low place)

solpress.co (Global: low place; English: low place)

team-e.co.jp (Global: low place; English: low place)

web.archive.org (Global: 1st place; English: 1st place)

yotsunoha.com (Global: low place; English: low place)

animenewsnetwork.com (Global: 51^st place; English: 46^th place)

getchu.com (Global: 9,455^th place; English: low place)

web.archive.org (Global: 1^st place; English: 1^st place)