Dyfyniad APA
ebrary, Inc, & Pearl, E. (2007). Open problems in topology. Elsevier.
Dyfyniad Arddull Chicago
ebrary, Inc, and Elliott Pearl. Open Problems in Topology. Amsterdam ; Oxford: Elsevier, 2007.
Dyfyniad MLA
ebrary, Inc, and Elliott Pearl. Open Problems in Topology. Elsevier, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.