Gaya APA

Azar, B, S. (1941). Understanding and Using English Grammar Third Edition With Answer Key/ Betty Schamper Azar (1nternat1onal). Amerika: Longman.

Gaya MLA

Azar, Betty, Schamper. "Understanding and Using English Grammar Third Edition With Answer Key/ Betty Schamper Azar". 1nternat1onal Amerika: Longman, 1941. Text.