Gaya APA

D., L., H., H.S, N. (2007). Advanced english grammar for TOEFL Preparation (Cet.2). Jakarta: Puspa Swara.

Gaya MLA

Lingga, Hotben, D.., H.S, Nino. "Advanced english grammar for TOEFL Preparation". Cet.2 Jakarta: Puspa Swara, 2007. Textbook.