Gaya APA

Azar, B, S., Budijanto, . (1993). Understanding an Using Englisg Grammar Second Edition (2nd edition). Jakarta: Binarupa Aksara.

Gaya MLA

Azar, Betty, Schrampfer., Budijanto, . "Understanding an Using Englisg Grammar Second Edition". 2nd edition Jakarta: Binarupa Aksara, 1993. Text.