Gaya APA
Interaction 2 Listening/Speaking. (2003).
New York:
Mc Graw Hill.
Gaya Chicago
Interaction 2 Listening/Speaking.
4th Edition.
New York:
Mc Graw Hill,
2003.
Buku.
Gaya MLA
Interaction 2 Listening/Speaking.
4th Edition.
New York:
Mc Graw Hill,
2003.
Buku.
Gaya Turabian
Interaction 2 Listening/Speaking.
New York:
Mc Graw Hill,
2003.
Buku.