"PCゲームセールスランキング 2010年6月" [PC Game Sales Ranking June 2010] (in Japanese). Getchu.com. Archived from the original on July 8, 2020. Retrieved March 6, 2013.
"PCゲームセールスランキング 2010年7月" [PC Game Sales Ranking July 2010] (in Japanese). Getchu.com. Archived from the original on July 8, 2020. Retrieved March 6, 2013.
2010年上半期 ゲーム・セールスランキング [First Half of 2010 Game Sales Ranking] (in Japanese). Getchu.com. Archived from the original on January 28, 2022. Retrieved March 6, 2013.
2010年 ゲーム・セールスランキング [2010 Game Sales Ranking] (in Japanese). Getchu.com. Retrieved March 6, 2013.
"VAアプリ情報満載『VAAP』18禁アプリマーケット『VAmarket』がオープン" ["VAAP", Fully Loaded with Information on VA Apps and "VA market", an Adult App Market, Open] (in Japanese). Key. January 31, 2013. Archived from the original on February 3, 2013. Retrieved February 2, 2013.
"あそBD版『クドわふたー』3月29日発売予定!ただいま予約受付中です!" [Kud Wafter's Aso-BD Edition Goes on Sale on March 29! Pre-orders are Now Being Accepted!] (in Japanese). Key. February 28, 2013. Archived from the original on May 15, 2020. Retrieved February 28, 2013.
"クドわふたー【全年齢版】 | Spec" [Kud Wafter (all ages edition) | Spec] (in Japanese). Key. Archived from the original on October 2, 2012. Retrieved March 15, 2013.
"クドわふたー【全年齢版】 | Special" [Kud Wafter (all ages edition) | Special] (in Japanese). Key. Archived from the original on September 24, 2012. Retrieved March 15, 2013.
"Special" (in Japanese). Key. Archived from the original on May 17, 2013. Retrieved April 25, 2010.
web.archive.org
"Story" (in Japanese). Key. Archived from the original on September 20, 2012. Retrieved April 11, 2010.
"Character" (in Japanese). Key. Archived from the original on February 4, 2020. Retrieved March 15, 2013.
"Spec" (in Japanese). Key. Archived from the original on September 23, 2020. Retrieved March 15, 2013.
魁 [Kai] (in Japanese). ErogameScape. Archived from the original on November 2, 2013. Retrieved February 15, 2015.
"ちかのーと Contact me" [Chika Note Contact me] (in Japanese). Chika Shirokiri. Archived from the original on March 2, 2012. Retrieved December 30, 2009.
クドわふたー [Kud Wafter] (in Japanese). VisualArt's. Archived from the original on February 14, 2014. Retrieved February 2, 2013.
"VAアプリ情報満載『VAAP』18禁アプリマーケット『VAmarket』がオープン" ["VAAP", Fully Loaded with Information on VA Apps and "VA market", an Adult App Market, Open] (in Japanese). Key. January 31, 2013. Archived from the original on February 3, 2013. Retrieved February 2, 2013.
"クドわふたー あそBD" [Kud Wafter Aso BD] (in Japanese). VisualArt's. Archived from the original on May 15, 2020. Retrieved December 7, 2014.
"あそBD版『クドわふたー』3月29日発売予定!ただいま予約受付中です!" [Kud Wafter's Aso-BD Edition Goes on Sale on March 29! Pre-orders are Now Being Accepted!] (in Japanese). Key. February 28, 2013. Archived from the original on May 15, 2020. Retrieved February 28, 2013.
"クドわふたー【全年齢版】 | Spec" [Kud Wafter (all ages edition) | Spec] (in Japanese). Key. Archived from the original on October 2, 2012. Retrieved March 15, 2013.
"クドわふたー【全年齢版】 | Special" [Kud Wafter (all ages edition) | Special] (in Japanese). Key. Archived from the original on September 24, 2012. Retrieved March 15, 2013.
予約状況ランキングログ [Reservation Ranking Log] (in Japanese). PCpress. Archived from the original on September 19, 2011. Retrieved June 28, 2010.
セールスランキング [Sales Ranking] (in Japanese). PCpress. Archived from the original on April 20, 2010. Retrieved July 30, 2010.
"PCゲームセールスランキング 2010年6月" [PC Game Sales Ranking June 2010] (in Japanese). Getchu.com. Archived from the original on July 8, 2020. Retrieved March 6, 2013.
"PCゲームセールスランキング 2010年7月" [PC Game Sales Ranking July 2010] (in Japanese). Getchu.com. Archived from the original on July 8, 2020. Retrieved March 6, 2013.
2010年上半期 ゲーム・セールスランキング [First Half of 2010 Game Sales Ranking] (in Japanese). Getchu.com. Archived from the original on January 28, 2022. Retrieved March 6, 2013.