Cita APA (7a ed.)

Doff, A., Jones, C. J., & Mitchell, K. Meanings into words. Intermediate. An integrated course for students of English. Test book.

Cita Chicago Style (17a ed.)

Doff, Adrian, Christopher J. Jones, y Keith Mitchell. Meanings into Words. Intermediate. An Integrated Course for Students of English. Test Book.

Cita MLA (8a ed.)

Doff, Adrian, et al. Meanings into Words. Intermediate. An Integrated Course for Students of English. Test Book.