Gaya APA
Sholikhah, I, M. et al (1991).
Practical English Usage: English As A Second Language 3 .
Jakarta:
Binarupa Aksara.
Gaya MLA
Sholikhah, Ika, Maratus. et al.
"Practical English Usage: English As A Second Language 3".
Jakarta:
Binarupa Aksara,
1991.
Text.