APA (7th ed.) Citation

Marckwardt, A. H., & Willibrand, W. A. (1957). Principal and subsidiary dialect areas in the North-Central States. Published for the Society by University of Alabama Press.

Chicago Style (17th ed.) Citation

Marckwardt, Albert H., and W. A. Willibrand. Principal and Subsidiary Dialect Areas in the North-Central States. University: Published for the Society by University of Alabama Press, 1957.

MLA (9th ed.) Citation

Marckwardt, Albert H., and W. A. Willibrand. Principal and Subsidiary Dialect Areas in the North-Central States. Published for the Society by University of Alabama Press, 1957.