APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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