APA (7th ed.) Citation

Hjelmsley, L., & Whitfield, F. J. (1961). prolegomena to a theory of language. The University of Wisconsin Press.

Chicago Style (17th ed.) Citation

Hjelmsley, Louis, and Francis J. Whitfield. Prolegomena to a Theory of Language. Madison: The University of Wisconsin Press, 1961.

MLA (8th ed.) Citation

Hjelmsley, Louis, and Francis J. Whitfield. Prolegomena to a Theory of Language. The University of Wisconsin Press, 1961.