Broughton, G. (1994). Teaching english as a foreign language (2nd ed.). Routledge.
Chicago-viite (17. p.)Broughton, Geoffrey. Teaching English as a Foreign Language. 2nd ed. London: Routledge, 1994.
MLA-viite (9. p.)Broughton, Geoffrey. Teaching English as a Foreign Language. 2nd ed. Routledge, 1994.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.