APA (7th ed.) Citation

Butterworth, B., Dahl, O., & Comrie, B. (1984). Explanations for language universals. Mouton.

Chicago Style (17th ed.) Citation

Butterworth, Brian, Osten Dahl, and Bernard Comrie. Explanations for Language Universals. Berlin: Mouton, 1984.

MLA (9th ed.) Citation

Butterworth, Brian, et al. Explanations for Language Universals. Mouton, 1984.