Gaya APA

Djunaedi, P., Schrampfer, A, B. (1989). Understanding And Using English Grammar (2nd ed) . New Jersey: Prentice-Hall.

Gaya MLA

Djunaedi, Purwadi., Schrampfer, Azar., Betty. "Understanding And Using English Grammar (2nd ed)". New Jersey: Prentice-Hall, 1989. Text.