Gaya APA
Onso, Samaudin LA, Gustiansah, Kasna. (1992).
Directive English Conversation .
Surabaya:
APOLLO.
Gaya Chicago
Onso, Samaudin LA, Gustiansah, Kasna.
Directive English Conversation.
Surabaya:
APOLLO,
1992.
Text.
Gaya MLA
Onso, Samaudin LA, Gustiansah, Kasna.
Directive English Conversation.
Surabaya:
APOLLO,
1992.
Text.
Gaya Turabian
Onso, Samaudin LA, Gustiansah, Kasna.
Directive English Conversation.
Surabaya:
APOLLO,
1992.
Print.