Gaya APA
White, G, W, ., [, A.
(2014).
Essentials of world regional geography
(
Ed. III)
.
New York:
Mc Graw-Hill.
Gaya MLA
White, George, W., ..., [et., Al.].
"Essentials of world regional geography".
Ed. III
New York:
Mc Graw-Hill,
2014.
Text.