Cita APA

Mercer, N., Swann, J., & Mayor, B. M. (2007). Learning English. Routledge in association with the Open University.

Citación estilo Chicago

Mercer, Neil, Joan Swann, y Barbara M. Mayor. Learning English. Abingdon, UK New York: Routledge in association with the Open University, 2007.

Cita MLA

Mercer, Neil, et al. Learning English. Routledge in association with the Open University, 2007.