Murphy, R. (2003). Essential English grammar: A self-study reference and practice book for elementary students of english (2nd ed.). Cambridge Univ. Pr.
Citazione stile Chigago Style (17a edizione)Murphy, Raymond. Essential English Grammar: A Self-study Reference and Practice Book for Elementary Students of English. 2nd ed. Cambridge: Cambridge Univ. Pr, 2003.
Citatione MLA (9a ed.)Murphy, Raymond. Essential English Grammar: A Self-study Reference and Practice Book for Elementary Students of English. 2nd ed. Cambridge Univ. Pr, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.