Together When... (English Wikipedia)

Channel Ai Staff (February 27, 2008). "Ayumi Hamasaki – Guilty (album review)". Channel Ai. Archived from the original on March 29, 2016. Retrieved June 27, 2016.
Channel Ai Staff (December 26, 2007). "Ayumi Hamasaki – Together When..." Channel Ai. Archived from the original on August 28, 2016. Retrieved June 27, 2016.

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

Stern, Bradley (January 6, 2008). "Ayumi Hamasaki – Guilty (album review)". MuuMuse. Retrieved June 27, 2016.

"Ayu's New Song Is a Digital-Limited Release". Nikkan Sports (in Japanese). Nikkan Sports Newspaper. November 20, 2007. Archived from the original on December 10, 2008. Retrieved December 1, 2008.

"Ayumi Hamasaki CD Ranking Oricon Music Style" (Bulletin) (in Japanese). Oricon. Retrieved May 13, 2015.

"オリコンランキング情報サービス「you大樹」" [Oricon Ranking Information Service 'You Big Tree']. Oricon (in Japanese). Retrieved May 21, 2014.

"レコード協会調べ 12月度有料音楽配信チャート（「着うた（R）」）＜略称：12月度レコ協チャート（「着うた（R）」）＞" (in Japanese). Recording Industry Association of Japan. January 20, 2008. Retrieved April 25, 2008.
"Japanese ringtone certifications" (in Japanese). Recording Industry Association of Japan. Retrieved September 15, 2021. Select 2011年2月 on the drop-down menu
"Japanese ringtone certifications" (in Japanese). Recording Industry Association of Japan. Retrieved September 15, 2021. Select 2007年12月 on the drop-down menu
Below are the certification formats for Hamasaki's single "Blue Bird";
- レコード協会調べ 8月度有料音楽配信認定 [Record Association Investigation: August Digital Music Download Certifications] (in Japanese). Recording Industry Association of Japan. September 20, 2006. Retrieved January 23, 2014.
- Below are the certification formats for Hamasaki's singles "Carols" and "Heaven";
  - レコード協会調べ 8月度有料音楽配信認定 [Record Association Investigation: August Digital Music Download Certifications] (in Japanese). Recording Industry Association of Japan. September 20, 2006. Retrieved January 23, 2014.

Mittal, Sushubh (November 1, 2006). "Oricon exits from Japanese PC music download market". Techwhack. Retrieved June 6, 2016.

Channel Ai Staff (February 27, 2008). "Ayumi Hamasaki – Guilty (album review)". Channel Ai. Archived from the original on March 29, 2016. Retrieved June 27, 2016.
"Together When... ayumi hamasaki" (in Japanese). Avex Group. 2007. Archived from the original on August 19, 2014. Retrieved August 20, 2014.
"Ayu's New Song Is a Digital-Limited Release". Nikkan Sports (in Japanese). Nikkan Sports Newspaper. November 20, 2007. Archived from the original on December 10, 2008. Retrieved December 1, 2008.
Channel Ai Staff (December 26, 2007). "Ayumi Hamasaki – Together When..." Channel Ai. Archived from the original on August 28, 2016. Retrieved June 27, 2016.