"Mami Koyama (visual voices guide)". behindthevoiceactors.com. Retrieved May 22, 2024. A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its opening and/or closing credits and/or other reliable sources of information.{{cite web}}: CS1 maint: postscript (link)
"小山茉美の出演アニメDVD情報" [Cast anime DVD information of Koyama Mimi]. Koyama Mami Official Website (in Japanese). Archived from the original on August 28, 2017. Retrieved August 12, 2015.
小山茉美の吹き替え洋画ビデオ情報 [Dubbed Movie video information of Koyama Mimi]. Koyama Mami Official Website (in Japanese). Archived from the original on August 4, 2015. Retrieved August 12, 2015.
"声優さん出演リスト 個別表示：小山茉美(Mami Koyama)＝小山まみ" [Voice actor's appearance list individual display: Mami Koyama]. Voice Artist Database (in Japanese). GamePlaza-HARUKA-. September 29, 2015. Retrieved March 15, 2016.
star-ch.jp
"アメリカン・ビューティー". Star Channel. Retrieved December 27, 2019.
"小山茉美の出演アニメDVD情報" [Cast anime DVD information of Koyama Mimi]. Koyama Mami Official Website (in Japanese). Archived from the original on August 28, 2017. Retrieved August 12, 2015.
小山茉美の吹き替え洋画ビデオ情報 [Dubbed Movie video information of Koyama Mimi]. Koyama Mami Official Website (in Japanese). Archived from the original on August 4, 2015. Retrieved August 12, 2015.
