Dyfyniad APA

176339 Croom, F. H. (1989). Principles of topology. Philadelphia : Saunders College.

Dyfyniad Arddull Chicago

176339 Croom, Fred H. Principles of Topology. Philadelphia : Saunders College, 1989.

Dyfyniad MLA

176339 Croom, Fred H. Principles of Topology. Philadelphia : Saunders College, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.