Gaya APA
Widdowson,H.g. (2000).
Language Testing .
New York:
Oxford University Press.
Gaya Chicago
Widdowson,H.g.
Language Testing.
New York:
Oxford University Press,
2000.
Text.
Gaya MLA
Widdowson,H.g.
Language Testing.
New York:
Oxford University Press,
2000.
Text.
Gaya Turabian
Widdowson,H.g.
Language Testing.
New York:
Oxford University Press,
2000.
Print.