Cita APA

Trudgill, P., & Hannah, J. (2013). International english: A guide to the varieties of standard english (5th edition.). London: Routledge.

Citación estilo Chicago

Trudgill, Peter, y Jean Hannah. International English: A Guide to the Varieties of Standard English. 5th edition. London: Routledge, 2013.

Cita MLA

Trudgill, Peter, y Jean Hannah. International English: A Guide to the Varieties of Standard English. 5th edition. London: Routledge, 2013.