Gaya APA
Yahya, D, I. et al
(1989).
FUNCTIONAL AND COMMUNICATIVE ENGLISH
.
Surabaya:
Indahjaya Adipratama.
Gaya MLA
Yahya, Drs.R.A., Iskandar. et al.
"FUNCTIONAL AND COMMUNICATIVE ENGLISH".
Surabaya:
Indahjaya Adipratama,
1989.
Text.