"PSP「ハヤテのごとく! ナイトメアパラダイス」が3月26日に発売。コナミスタイル限定版は"武装神姫ナギ"付き" [Hayate no Gotoko! Nightmare Paradise Goes on Sale March 26. Komami-style Limited Edition "Armored Divine Princess Nagi" Included] (in Japanese). 4gamer. January 29, 2013. Archived from the original on May 2, 2020. Retrieved March 24, 2013.
amazon.co.jp
Nagi ga Tsukaima!? Yattoke Sekai Seifuku product page (in Japanese). ASIN4094510567.
ハヤテのごとく!公式BOX [Hayate the Combat Butler Official Box] (in Japanese). ASIN409159056X.
ハヤテのごとく!:1000万部到達 4年で大台へ [Hayate no Gotoku!: Over 10 Million Copies Sold After 4 Years] (in Japanese). Mainichi Shimbun. January 16, 2009. Archived from the original on February 18, 2009. Retrieved October 26, 2015.
"PSP「ハヤテのごとく! ナイトメアパラダイス」が3月26日に発売。コナミスタイル限定版は"武装神姫ナギ"付き" [Hayate no Gotoko! Nightmare Paradise Goes on Sale March 26. Komami-style Limited Edition "Armored Divine Princess Nagi" Included] (in Japanese). 4gamer. January 29, 2013. Archived from the original on May 2, 2020. Retrieved March 24, 2013.
ハヤテのごとく!:1000万部到達 4年で大台へ [Hayate no Gotoku!: Over 10 Million Copies Sold After 4 Years] (in Japanese). Mainichi Shimbun. January 16, 2009. Archived from the original on February 18, 2009. Retrieved October 26, 2015.