APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.