Gaya APA
RICHARDS, JACK C. (2013).
INTERCHANGE LEVEL 2 (FOURTH EDITION).
CAMBRIDGE:
CAMBRIDGE.
Gaya Chicago
RICHARDS, JACK C.
INTERCHANGE LEVEL 2.
FOURTH EDITION
CAMBRIDGE:
CAMBRIDGE,
2013.
Text.
Gaya MLA
RICHARDS, JACK C.
INTERCHANGE LEVEL 2.
FOURTH EDITION
CAMBRIDGE:
CAMBRIDGE,
2013.
Text.
Gaya Turabian
RICHARDS, JACK C.
INTERCHANGE LEVEL 2.
FOURTH EDITION
CAMBRIDGE:
CAMBRIDGE,
2013.
Print.