Gaya APA
Erlangga, T.
(2010).
TOEFL ITP Assessment series Vol
.
Haupapauge, New York, AS.:
Erlangga.
Gaya MLA
Erlangga, Tim.
"TOEFL ITP Assessment series Vol".
Haupapauge, New York, AS.:
Erlangga,
2010.
Text.