Gaya APA
Murphy, R. (1998).
English grammar in use :a reference and practice book for intermediate students (2nd ed., Cet.7).
Cambridge, YK:
Cambridge University Press.
Gaya MLA
Murphy, Raymond.
"English grammar in use :a reference and practice book for intermediate students".
2nd ed., Cet.7
Cambridge, YK:
Cambridge University Press,
1998.
Text.