Gaya APA

Kusmana, ., Yudistira, J. (2011). Fun Learning English [1] : For Grade I Elementary School (Ed. 1.--). Jakarta: Grafindo.

Gaya MLA

Kusmana, ., Yudistira, Jaka. "Fun Learning English [1] : For Grade I Elementary School". Ed. 1.-- Jakarta: Grafindo, 2011. Text.