APA (7th ed.) Citation

Crowell, R. H., & Fox, R. H. (1977). Introduction to knot theory (4. print.). Springer.

Chicago Style (17th ed.) Citation

Crowell, Richard H., and Ralph H. Fox. Introduction to Knot Theory. 4. print. Heidelberg: Springer, 1977.

MLA (9th ed.) Citation

Crowell, Richard H., and Ralph H. Fox. Introduction to Knot Theory. 4. print. Springer, 1977.