Gaya APA
ALEXANDER, L.G. (2000).
New concept english practice and progress .
London:
Longman.
Gaya Chicago
ALEXANDER, L.G.
New concept english practice and progress.
London:
Longman,
2000.
Text.
Gaya MLA
ALEXANDER, L.G.
New concept english practice and progress.
London:
Longman,
2000.
Text.
Gaya Turabian
ALEXANDER, L.G.
New concept english practice and progress.
London:
Longman,
2000.
Print.