Gaya APA

Partners, C, G, &. (2013). Essay Writing English for Academic Purposes with Exercises and Answer Key (Ed 2 Cet 1). Yogyakarta: Andi.

Gaya MLA

Partners, Cheryl, Groth, &. "Essay Writing English for Academic Purposes with Exercises and Answer Key". Ed 2 Cet 1 Yogyakarta: Andi, 2013. Text.