Cita APA (7a ed.)

Murphy, R., & Altman, R. (1996). Grammar in use: Reference and practice intermediate students of english : answer key. University.

Cita Chicago Style (17a ed.)

Murphy, Raymond, y Roann Altman. Grammar in Use: Reference and Practice Intermediate Students of English : Answer Key. Cambridge: University, 1996.

Cita MLA (8a ed.)

Murphy, Raymond, y Roann Altman. Grammar in Use: Reference and Practice Intermediate Students of English : Answer Key. University, 1996.