Gaya APA
Signature reading level F. (2008).
New York:
Mc Graw-Hill.
Gaya Chicago
Signature reading level F.
.
New York:
Mc Graw-Hill,
2008.
Buku.
Gaya MLA
Signature reading level F.
.
New York:
Mc Graw-Hill,
2008.
Buku.
Gaya Turabian
Signature reading level F.
New York:
Mc Graw-Hill,
2008.
Buku.