APA Style
Diamond, J.
(2013).
Guns, Germs & Steel = Bedil, Kuman, & Baja
.
Jakarta:
Kepustakaan Populer Gramedia.
MLA Style
Diamond, Jared.
"Guns, Germs & Steel = Bedil, Kuman, & Baja".
Jakarta:
Kepustakaan Populer Gramedia,
2013.
.