Gaya APA

Whitten, A, J. et al (1987). The ecology of Sumatra / Anthony J. Whitten ... [et al.] (Ed.ke-2, Cet.2). : Gadjah Mada University Press.

Gaya MLA

Whitten, Anthony, J.. et al. "The ecology of Sumatra / Anthony J. Whitten ... [et al.]". Ed.ke-2, Cet.2 : Gadjah Mada University Press, 1987. Textbook.