Trudgill, P., & Hannah, J. (2002). International English: A guide to varieties of standard English (4th ed.). E. Arnold.
Citazione stile Chigago Style (17a edizione)Trudgill, Peter, e Jean Hannah. International English: A Guide to Varieties of Standard English. 4th ed. London: E. Arnold, 2002.
Citatione MLA (9a ed.)Trudgill, Peter, e Jean Hannah. International English: A Guide to Varieties of Standard English. 4th ed. E. Arnold, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.