Παραπομπή APA

Gay, D. (2007). Explorations in topology: Map coloring, surfaces, and knots. Elsevier Academic Press.

Παραπομπή Chicago Style

Gay, David. Explorations in Topology: Map Coloring, Surfaces, and Knots. Amsterdam ; Boston: Elsevier Academic Press, 2007.

Παραπομπή MLA

Gay, David. Explorations in Topology: Map Coloring, Surfaces, and Knots. Elsevier Academic Press, 2007.