Cita APA

Trudgill, P., & Hannah, J. (2017). International english: A guide to varieties of english around the world (Sixth edition.). London: Routledge.

Citación estilo Chicago

Trudgill, Peter, y Jean Hannah. International English: A Guide to Varieties of English Around the World. Sixth edition. London: Routledge, 2017.

Cita MLA

Trudgill, Peter, y Jean Hannah. International English: A Guide to Varieties of English Around the World. Sixth edition. London: Routledge, 2017.