Cita APA (7a ed.)

Kerr, P., & Kay, S. (2002). Inside out workbook with key pre-intermediate. Macmillan.

Cita Chicago Style (17a ed.)

Kerr, Philip, y Sue Kay. Inside Out Workbook with Key Pre-intermediate. China: Macmillan, 2002.

Cita MLA (9a ed.)

Kerr, Philip, y Sue Kay. Inside Out Workbook with Key Pre-intermediate. Macmillan, 2002.