Gaya APA
NILSEN, D, L.
(1993).
Eglish Conversation Practices / Don L.F.Nilsen
.
:
Binarupa Aksara.
Gaya MLA
NILSEN, Don, L.F..
"Eglish Conversation Practices / Don L.F.Nilsen".
:
Binarupa Aksara,
1993.
Referensi.