Murphy, R. (1991). Essential grammar in use: A self-study reference and practice book for elementary students of English ; with answers (4. print.). Univ. Press.
Chicago-Zitierstil (17. Ausg.)Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English ; with Answers. 4. print. Cambridge <<[u.a.]>>: Univ. Press, 1991.
MLA-Zitierstil (9. Ausg.)Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English ; with Answers. 4. print. Univ. Press, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.