Gaya APA
SKINNER, B, J.
(1984).
Sumber daya bumi
.
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
SKINNER, Brian, J.
"Sumber daya bumi".
Yogyakarta:
Gadjah Mada University Press,
1984.
Buku.