Gaya APA

Sukur, S, G., Puji, L, E. (2007). Comprehensive English Grammar for the Toefl Test For Beginner 1 . Yogyakarta: Indonesia Cerdas.

Gaya MLA

Sukur, Silvester, Goridus., Puji, Lisa, Esti. "Comprehensive English Grammar for the Toefl Test For Beginner 1". Yogyakarta: Indonesia Cerdas, 2007. Book.