APA Citatie

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

Chicago Style citaat

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

MLA citatie

Crowell, Richard H., en Ralph H. Fox. Introduction to Knot Theory. Springer-Verlag, 1963.