Gaya APA
Effendi,Yudy, .
(2006).
Improve your reading & speaking in english / Yudy Effendi
.
Jakarta:
Gemagung Ikhtiari.
Gaya MLA
Effendi,Yudy, .
"Improve your reading & speaking in english / Yudy Effendi".
Jakarta:
Gemagung Ikhtiari,
2006.
Text.