Παραπομπή σε μορφή APA (7η εκδ.)

Shopen, T. (1979). Languages and their speakers. Winthrop Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Shopen, Timothy. Languages and Their Speakers. Cambridge, Mass: Winthrop Publishers, 1979.

Παραπομπή σε μορφή MLA (8th εκδ.)

Shopen, Timothy. Languages and Their Speakers. Winthrop Publishers, 1979.