Cita APA

Graddol, D., Leith, D., & Swann, J. (1996). English: History, diversity and change. Routledge.

Citación estilo Chicago

Graddol, David, Dick Leith, and Joan Swann. English: History, Diversity and Change. London: Routledge, 1996.

Cita MLA

Graddol, David, et al. English: History, Diversity and Change. Routledge, 1996.