Gaya APA

Sugeng, B., Fitria, I. (2009). Let's Make Friends with English [4] : For Elementary School Grade Four (Cet. 3.--). Jakarta: Esis.

Gaya MLA

Sugeng, Bambang., Fitria, Indah. "Let's Make Friends with English [4] : For Elementary School Grade Four". Cet. 3.-- Jakarta: Esis, 2009. Text.