Gaya APA

Udoyono, Bambang. (2012). Engish Conversation for Customer Service and Sales Promotion Staff (Ed. 1). Yogyakarta: Andi.

Gaya Chicago

Udoyono, Bambang. Engish Conversation for Customer Service and Sales Promotion Staff. Ed. 1 Yogyakarta: Andi, 2012. Text.

Gaya MLA

Udoyono, Bambang. Engish Conversation for Customer Service and Sales Promotion Staff. Ed. 1 Yogyakarta: Andi, 2012. Text.

Gaya Turabian

Udoyono, Bambang. Engish Conversation for Customer Service and Sales Promotion Staff. Ed. 1 Yogyakarta: Andi, 2012. Print.