Gaya APA

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

Gaya MLA

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