Gaya APA
Azar, B, S.
(1998).
Understanding And Using : English Grammar
(
Cetakan)
.
England:
Mery Jane Peluso.
Gaya MLA
Azar, Betty, Schrampfer.
"Understanding And Using : English Grammar".
Cetakan
England:
Mery Jane Peluso,
1998.
Monograf.