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