APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Crowell, R. H., and R.H Fox. Introduction to Knot Theory. New York: Springer-Verlag, 1963.

MLA (9th ed.) Citation

Crowell, R. H., and R.H Fox. Introduction to Knot Theory. Springer-Verlag, 1963.