Gaya APA
Murphy, R. (1998).
English Grammar in Use: A Reference and Practice Book for Intermediate Students (Ed. 2, Cet. 7).
Amerika:
Cambridge University Press.
Gaya MLA
Murphy, Raymond.
"English Grammar in Use: A Reference and Practice Book for Intermediate Students".
Ed. 2, Cet. 7
Amerika:
Cambridge University Press,
1998.
Text.