Cita APA (7a ed.)

Murphy, R. Basic Grammar in use. Reference and practice for students of English (5a ed.).

Cita Chicago Style (17a ed.)

Murphy, Raymond. Basic Grammar in Use. Reference and Practice for Students of English. 5a ed.

Cita MLA (8a ed.)

Murphy, Raymond. Basic Grammar in Use. Reference and Practice for Students of English. 5a ed.