Gaya APA
MURPHY, R. (1998).
Engglish grammer in use : reference and practice book for intermediate students / Raymond Murphy (2nd, ed.).
:
cambridge university press.
Gaya MLA
MURPHY, Raymond.
"Engglish grammer in use : reference and practice book for intermediate students / Raymond Murphy".
2nd, ed.
:
cambridge university press,
1998.
Referensi.