Gaya APA
Nation of Nations. (2007).
Jakarta:
Mc Graw Hill.
Gaya Chicago
Nation of Nations.
Ed. 6.
Jakarta:
Mc Graw Hill,
2007.
.
Gaya MLA
Nation of Nations.
Ed. 6.
Jakarta:
Mc Graw Hill,
2007.
.
Gaya Turabian
Nation of Nations.
Jakarta:
Mc Graw Hill,
2007.
.