Gaya APA
Tjitrosoepomo, G. (2011).
Taksonomi tumbuhan (schizophyta, thallopyta, bryophyta, pteridopyta) .
Gorontalo:
Gadjah Mada University Press.
Gaya MLA
Tjitrosoepomo, Gembong.
"Taksonomi tumbuhan (schizophyta, thallopyta, bryophyta, pteridopyta)".
Gorontalo:
Gadjah Mada University Press,
2011.
Text.