APA Style
Gustiansah, Kasna, dan Onso La Samaudin. (1992).
Directive English Conversation (Pertama).
Surabaya:
Apollo.
Chicago Style
Gustiansah, Kasna, dan Onso La Samaudin.
Directive English Conversation.
Pertama
Surabaya:
Apollo,
1992.
Text.
MLA Style
Gustiansah, Kasna, dan Onso La Samaudin.
Directive English Conversation.
Pertama
Surabaya:
Apollo,
1992.
Text.
Turabian Style
Gustiansah, Kasna, dan Onso La Samaudin.
Directive English Conversation.
Pertama
Surabaya:
Apollo,
1992.
Print.