APA استشهاد

Kasriel, R. H. (1977). undergraduate topology. Robert E Krieger.

استشهاد بنمط شيكاغو

Kasriel, Robert Harman. Undergraduate Topology. New York: Robert E Krieger, 1977.

MLA استشهاد

Kasriel, Robert Harman. Undergraduate Topology. Robert E Krieger, 1977.