Gaya APA
Barnard, W, W, R. (2001).
Fifty - Fifty Book Two : An Intermediate Course In Communicative English (2rd.Ed.).
:
.
Gaya MLA
Barnard, Warren, Wilson,, Roger.
"Fifty - Fifty Book Two : An Intermediate Course In Communicative English".
2rd.Ed.
:
,
2001.
Text.