Ishimoto, Ayako (October 2014). "吉田ちかさん「英語学習者の背中を押してあげたい」(ユーチューバー)". MyNavi News (in Japanese). Archived from the original on November 26, 2021. Retrieved November 24, 2021.
Ishimoto, Ayako (October 2014). "吉田ちかさん「英語学習者の背中を押してあげたい」(ユーチューバー)". MyNavi News (in Japanese). Archived from the original on November 26, 2021. Retrieved November 24, 2021.
Hosogai, Kei [@kei_hsgi1010] (October 20, 2014). "最近びっくりした事。人気ユーチューバーで、CMにも出たりしているバイリンガール…なんと俺のシアトル時代の同級生笑 週に一回の日本人学校で小学生から高校生までずっと同じ笑 覚えてるかなー?笑 なんか…めちゃ不思議や笑笑" [Something surprising happened recently. Bilingirl, a popular YouTuber, appeared in a commercial. She was my classmate when I lived in Seattle (lol). She's always been the same since we attended Japanese school once a week from elementary to high school (lol). I wonder if she remembers me? (lol) Somehow... this is very weird (lolol).] (Tweet) (in Japanese). Retrieved November 24, 2021 – via Twitter.