APA (7th ed.) Citation

Crowell, R. H., & Fox, R. H. (1963). Introduction to knot theory / by R.H. Crowell and R.H. Fox. Blaisdell.

Chicago Style (17th ed.) Citation

Crowell, R. H., and R. H. Fox. Introduction to Knot Theory / by R.H. Crowell and R.H. Fox. New York ; London: Blaisdell, 1963.

MLA (9th ed.) Citation

Crowell, R. H., and R. H. Fox. Introduction to Knot Theory / by R.H. Crowell and R.H. Fox. Blaisdell, 1963.

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