Gaya APA
HULL, J. et al (1991).
INTERCHANGE FOUTH EDITION: STUDENTS BOOK 2 .
JAKARTA BARAT:
CAMBRIDGE UNIVERSITY PRESS.
Gaya MLA
HULL, JONATHAN. et al.
"INTERCHANGE FOUTH EDITION: STUDENTS BOOK 2".
JAKARTA BARAT:
CAMBRIDGE UNIVERSITY PRESS,
1991.
Text.