Gaya APA

Murphy, R. (2015). Essential grammar in use: A self study reference and practice book for intermediate learners of english with answers (Fourth Edition). Tidak Teridentifikasi: Cambridge university Press.

Gaya MLA

Murphy, Raymond. "Essential grammar in use: A self study reference and practice book for intermediate learners of english with answers". Fourth Edition Tidak Teridentifikasi: Cambridge university Press, 2015. Text.