Gaya APA

Tjitrosoepomo, G. (1989, 1990, 2003, 20). Morfologi tumbuhan / Gembong Tjitrosoepomo (Cet.5,6,14,15, 17,20, 21,22). Yogyakarta: Gadjah Mada University Press.

Gaya MLA

Tjitrosoepomo, Gembong. "Morfologi tumbuhan / Gembong Tjitrosoepomo". Cet.5,6,14,15, 17,20, 21,22 Yogyakarta: Gadjah Mada University Press, 1989, 1990, 2003, 20. Textbook.