Gaya APA

Azar, B, S., Matthies, B, F. (2001). (FKIP) Understanding and Using English Grammar (3). United Kingdom: A Pearson Education Company.

Gaya MLA

Azar, Betty, Schrampfer., Matthies, Barbara, F.. "(FKIP) Understanding and Using English Grammar". 3 United Kingdom: A Pearson Education Company, 2001. TEXT.