Gaya APA

Triasmara, A., A.U, Z. (2017). Simple and easy english / Adi Triasmara (Cet. 1). Yogyakarta: Checklist.

Gaya MLA

Triasmara, Adi., A.U, Zhifana. "Simple and easy english / Adi Triasmara". Cet. 1 Yogyakarta: Checklist, 2017. Text.