Dyfyniad APA

Queen City Philatelic Society & Eastern Stamp Exchange. The Rocky Mountain stamp. Rocky Mountain Stamp Pub. Co.

Dyfyniad Arddull Chicago

Queen City Philatelic Society and Eastern Stamp Exchange. The Rocky Mountain Stamp. Denver, Colo.: Rocky Mountain Stamp Pub. Co.

Dyfyniad MLA

Queen City Philatelic Society and Eastern Stamp Exchange. The Rocky Mountain Stamp. Rocky Mountain Stamp Pub. Co.

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