Gaya APA
MURPHY, R. (1990).
ENGLISH GRAMMAR IN USE: A Self-Study reference and practice book for intermediate students With Answers Edition .
:
CAMBRIDGE UNIVERSITY PRESS.
Gaya MLA
MURPHY, RAYMOND.
"ENGLISH GRAMMAR IN USE: A Self-Study reference and practice book for intermediate students With Answers Edition".
:
CAMBRIDGE UNIVERSITY PRESS,
1990.
Text.