APA (7th ed.) Citation

Crowell, R. H. (1977). Introduction to knot theory ((4.print. in the United States of America).). Springer.

Chicago Style (17th ed.) Citation

Crowell, Richard H. Introduction to Knot Theory. (4.print. in the United States of America). New York ; Heidelberg: Springer, 1977.

MLA (9th ed.) Citation

Crowell, Richard H. Introduction to Knot Theory. (4.print. in the United States of America). Springer, 1977.