APA (7th ed.) Citation

Langendoen, D. T., & Postal, P. M. (1985). The vastness of natural languages. B. Blackwell.

Chicago Style (17th ed.) Citation

Langendoen, D. Terence, and Paul Martin Postal. The Vastness of Natural Languages. Oxford, UK ; New York, NY, USA: B. Blackwell, 1985.

MLA (9th ed.) Citation

Langendoen, D. Terence, and Paul Martin Postal. The Vastness of Natural Languages. B. Blackwell, 1985.