Gaya APA
Azar, B, S., Hagen, S, A. (2017).
Understanding and Using English Grammar, Fifth Edition with Essential Online Resources (ed. 5).
Hoboken:
Azar Grammar.
Gaya MLA
Azar, Betty, Schrampfer., Hagen, Stacy, A..
"Understanding and Using English Grammar, Fifth Edition with Essential Online Resources".
ed. 5
Hoboken:
Azar Grammar,
2017.
Text.