Cita APA (7a ed.)

Coffin, C., Donohue, J., & North, S. (2009). Exploring English grammar: From formal to functional. Routledge.

Cita Chicago Style (17a ed.)

Coffin, Caroline, Jim Donohue, y Sarah North. Exploring English Grammar: From Formal to Functional. London: Routledge, 2009.

Cita MLA (9a ed.)

Coffin, Caroline, et al. Exploring English Grammar: From Formal to Functional. Routledge, 2009.