Gaya APA
Purnomo, Wahyu SS. (1997).
Creativ English Conversation (Kesatu).
Surabaya:
Amalia Surabaya.
Gaya Chicago
Purnomo, Wahyu SS.
Creativ English Conversation.
Kesatu
Surabaya:
Amalia Surabaya,
1997.
Text.
Gaya MLA
Purnomo, Wahyu SS.
Creativ English Conversation.
Kesatu
Surabaya:
Amalia Surabaya,
1997.
Text.
Gaya Turabian
Purnomo, Wahyu SS.
Creativ English Conversation.
Kesatu
Surabaya:
Amalia Surabaya,
1997.
Print.