Gaya APA
Brown, L, R. et al
(1995).
Masa Depan Bumi = State of The World 1993
.
Jakarta:
Yayasan Obor Indonesia.
Gaya MLA
Brown, Lester, R.. et al.
"Masa Depan Bumi = State of The World 1993".
Jakarta:
Yayasan Obor Indonesia,
1995.
Text.