Gaya APA
Sverdrup, K, A., Armbrust, E, V. (2008).
An introduction to the world's oceans ninth edition .
Boston:
Higher Education.
Gaya MLA
Sverdrup, Keith, A.., Armbrust, E., Virginia.
"An introduction to the world's oceans ninth edition".
Boston:
Higher Education,
2008.
BUKU PENGAYAAN.