Citação norma APA

Raymond Murphy. (2012). Essential English Grammar: Self study reference and practice book for elementary students of English. Cambridge.

Citação norma Chicago

Raymond Murphy. Essential English Grammar: Self Study Reference and Practice Book for Elementary Students of English. Cambridge, 2012.

Citação norma MLA

Raymond Murphy. Essential English Grammar: Self Study Reference and Practice Book for Elementary Students of English. Cambridge, 2012.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.