APA (7th ed.) Citation

Murphy, R. (1990). Essential grammar in use: A self-study reference and practice book for elementary students of english. Cambridge university press.

Chicago Style (17th ed.) Citation

Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English. Cambridge: Cambridge university press, 1990.

MLA (8th ed.) Citation

Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English. Cambridge university press, 1990.