Gaya APA

Baehaqi, I., Qudsy, S, Z. (2013). Let's speak english! (Cet.2). Yogyakarta: Pustaka Pelajar.

Gaya MLA

Baehaqi, Imam., Qudsy, Saifuddin, Zuhri. "Let's speak english!". Cet.2 Yogyakarta: Pustaka Pelajar, 2013. Textbook.