APA (7th ed.) Citation

Crowell, R. H., & Fox, R. H. (1963). Introduction to knot theory. Springer.

Chicago Style (17th ed.) Citation

Crowell, Richard H., and Ralph H. Fox. Introduction to Knot Theory. New York: Springer, 1963.

MLA (9th ed.) Citation

Crowell, Richard H., and Ralph H. Fox. Introduction to Knot Theory. Springer, 1963.