Gaya APA

Budiyani, S., pitriyani, I. (2013). English Gramar For Beginners . Yogyakarta: PT Citra Aji Parama.

Gaya MLA

Budiyani, Sari., pitriyani, Iwuk. "English Gramar For Beginners". Yogyakarta: PT Citra Aji Parama, 2013. Text.