Gaya APA
New Concept English : Practice and Progress. (1972).
:
.
Gaya Chicago
New Concept English : Practice and Progress.
Ed. Revisi.
:
,
1972.
Text.
Gaya MLA
New Concept English : Practice and Progress.
Ed. Revisi.
:
,
1972.
Text.
Gaya Turabian
New Concept English : Practice and Progress.
:
,
1972.
Print.