Yotoko, M. C. (1990). Gabi and the engkanto (the story of the first gabi plant and why its leaves never get wet. Bookmark.
Chicago-referens (17:e uppl.)Yotoko, Marla Chorengel. Gabi and the Engkanto (the Story of the First Gabi Plant and Why Its Leaves Never Get Wet. Makati: Bookmark, 1990.
MLA-referens (8:e uppl.)Yotoko, Marla Chorengel. Gabi and the Engkanto (the Story of the First Gabi Plant and Why Its Leaves Never Get Wet. Bookmark, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.