Gaya APA
75 readings plus. (2004).
Boston:
Mc Graw-Hill.
Gaya Chicago
75 readings plus.
7th.
Boston:
Mc Graw-Hill,
2004.
Buku.
Gaya MLA
75 readings plus.
7th.
Boston:
Mc Graw-Hill,
2004.
Buku.
Gaya Turabian
75 readings plus.
Boston:
Mc Graw-Hill,
2004.
Buku.