Gaya APA

Bell, A, D., Bryan, A. (1991). Plant form : an illustrated guide to flowering plant morphology . New York: PT.ELEX MEDIA KOMPUTINDO.

Gaya MLA

Bell, Adrian, D.., Bryan, Alan. "Plant form : an illustrated guide to flowering plant morphology". New York: PT.ELEX MEDIA KOMPUTINDO, 1991. Text.