Cita APA

Hewings, M. (2005). A self-study a reference: A self-study a reference and practice book for advanced learners of English (2a ed.). New York: Cambridge University Press.

Citación estilo Chicago

Hewings, Martin. A Self-study a Reference: A Self-study a Reference and Practice Book for Advanced Learners of English. 2a ed. New York: Cambridge University Press, 2005.

Cita MLA

Hewings, Martin. A Self-study a Reference: A Self-study a Reference and Practice Book for Advanced Learners of English. 2a ed. New York: Cambridge University Press, 2005.