Gaya APA

Skinner, B, J., Permana, . (1984). Sumber daya bumi . Yogyakarta: Gadjah Mada University Press.

Gaya MLA

Skinner, Brian, J.., Permana, . "Sumber daya bumi". Yogyakarta: Gadjah Mada University Press, 1984. Text.