Gaya APA
AZAR, B, S.
(1989).
UNDERSTANDING AND USING ENGLISH GRAMMAR
(
KEDUA)
.
USA:
PRENTICE HALL REGENTS.
Gaya MLA
AZAR, BETTY, SCHRAMFER.
"UNDERSTANDING AND USING ENGLISH GRAMMAR".
KEDUA
USA:
PRENTICE HALL REGENTS,
1989.
Buku Teks.