APA Style
IR, D, D, N, D.
(2004).
the practice of english language teaching
.
cambrige:
Rajawali Pers.
MLA Style
IR, Drs., Dahlan, Nasution,, Dipl..
"the practice of english language teaching".
cambrige:
Rajawali Pers,
2004.
Buku PGSD.