Παραπομπή σε μορφή APA (7η εκδ.)

Freeborn, D., French, P., & Langford, D. (1993). Varieties of english: An introduction to the study of language (2nd edition.). MacMillan.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Freeborn, Dennis, Peter French, και David Langford. Varieties of English: An Introduction to the Study of Language. 2nd edition. London: MacMillan, 1993.

Παραπομπή σε μορφή MLA (8th εκδ.)

Freeborn, Dennis, et al. Varieties of English: An Introduction to the Study of Language. 2nd edition. MacMillan, 1993.