Cita APA (7a ed.)

Bradley, P. T., & Mackenzie, I. E. (2004). Spanish: An essential grammar. Routledge.

Cita Chicago Style (17a ed.)

Bradley, Peter T., y I. E. Mackenzie. Spanish: An Essential Grammar. London ; New York: Routledge, 2004.

Cita MLA (8a ed.)

Bradley, Peter T., y I. E. Mackenzie. Spanish: An Essential Grammar. Routledge, 2004.