Gaya APA

Groth, C. (2007). Essay Writing : English For Academic Purposes (Ed.2, Jlh. Eksp=1). Yogyakarta: Andi Yogyakarta.

Gaya MLA

Groth, Cheryl. "Essay Writing : English For Academic Purposes". Ed.2, Jlh. Eksp=1 Yogyakarta: Andi Yogyakarta, 2007. Text.