Gaya APA

Suryani, S, R, L. (). The Complete Book of The IELTS Preparation (Ed. 1). Yogyakarta: Andi.

Gaya MLA

Suryani, Slamet, Riyanto,, Laila. "The Complete Book of The IELTS Preparation". Ed. 1 Yogyakarta: Andi, . Text.