Gaya APA
Signature reading level I (i). (2007).
New York:
Mc Graw-Hill.
Gaya Chicago
Signature reading level I (i).
.
New York:
Mc Graw-Hill,
2007.
Buku.
Gaya MLA
Signature reading level I (i).
.
New York:
Mc Graw-Hill,
2007.
Buku.
Gaya Turabian
Signature reading level I (i).
New York:
Mc Graw-Hill,
2007.
Buku.