Gaya APA

Huda, Z, A. (2017). Ultimate Edition TOEFL (Cet. 1). Surabaya: Penerbit Genta Group Production.

Gaya MLA

Huda, Zin-giber, Al. "Ultimate Edition TOEFL". Cet. 1 Surabaya: Penerbit Genta Group Production, 2017. Text.