Gaya APA

Whitten, A, J. et al (1987). The Ecology Of Sumatera (Cet 2). Yogyakarta: Gajah Mada University Press.

Gaya MLA

Whitten, Anthony, J.. et al. "The Ecology Of Sumatera". Cet 2 Yogyakarta: Gajah Mada University Press, 1987. Text.