Gaya APA

Bidari, D. (2020). English Grammar & Vocabulary : More Challenging Way to Learn English (cet. 1). Yogyakarta: Deepublish.

Gaya MLA

Bidari, Delvina. "English Grammar & Vocabulary : More Challenging Way to Learn English". cet. 1 Yogyakarta: Deepublish, 2020. Text.