APA (7th ed.) Citation

ScienceDirect (Online service) & Mitchell, B. (1971). Theory of categories (4. print.). Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service) and Barry Mitchell. Theory of Categories. 4. print. New York: Academic Press, 1971.

MLA (9th ed.) Citation

ScienceDirect (Online service) and Barry Mitchell. Theory of Categories. 4. print. Academic Press, 1971.

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