APA Edition Citation

Callahan, H. M., & Williams, J. (1999). Harry Callahan. Aperture Foundation, Inc..

Chicago Edition Citation

Callahan, Harry M., and Jonathan Williams. Harry Callahan. New York, NY: Aperture Foundation, Inc., 1999.

MLA Edition Citation

Callahan, Harry M., and Jonathan Williams. Harry Callahan. Aperture Foundation, Inc., 1999.

Warning: These citations may not always be 100% accurate.