Gaya APA
Palmer, R, P, R.
(2007).
A history of the modern world.--
(
Ed. 10.--)
.
America:
McGraw-Hill.
Gaya MLA
Palmer, R.R., Palmer,, R.R..
"A history of the modern world.--".
Ed. 10.--
America:
McGraw-Hill,
2007.
Buku.