Gaya APA
Signature reading level H. (2006).
New York:
Mc Graw-Hill.
Gaya Chicago
Signature reading level H.
.
New York:
Mc Graw-Hill,
2006.
Buku.
Gaya MLA
Signature reading level H.
.
New York:
Mc Graw-Hill,
2006.
Buku.
Gaya Turabian
Signature reading level H.
New York:
Mc Graw-Hill,
2006.
Buku.