APA (7th ed.) Citation

Guillaume, G., Hirtle, W., & Hewson, J. (1984). Foundations for a science of language. Benjamins.

Chicago Style (17th ed.) Citation

Guillaume, Gustave, Walther Hirtle, and John Hewson. Foundations for a Science of Language. Amsterdam: Benjamins, 1984.

MLA (9th ed.) Citation

Guillaume, Gustave, et al. Foundations for a Science of Language. Benjamins, 1984.