Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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