APA

Crowell R. H., . (1977). Introduction to knot theory. New York: Springer-Verlag.

Chicago

Crowell Richard H, . 1977. Introduction to knot theory. New York: Springer-Verlag.

Harvard

Crowell R. H., . (1977). Introduction to knot theory. New York: Springer-Verlag.

MLA

Crowell Richard H, . Introduction to knot theory. New York: Springer-Verlag. 1977.