Gaya APA

SETYARINI, S., Sulistyo, U. (2007). Successful English for Business : Develop Your Speaking Skill in the Business . Yogyakarta: Penerbit Andi Yogyakarta.

Gaya MLA

SETYARINI, SUSAN., Sulistyo, Ule. "Successful English for Business : Develop Your Speaking Skill in the Business". Yogyakarta: Penerbit Andi Yogyakarta, 2007. Text.