Dyfyniad APA

Clark University (Worcester, Mass.), & Atwood, W. W. Economic geography. Clark University.

Dyfyniad Arddull Chicago

Clark University (Worcester, Mass.), and Wallace Walter Atwood. Economic Geography. Worcester, Mass.: Clark University.

Dyfyniad MLA

Clark University (Worcester, Mass.), and Wallace Walter Atwood. Economic Geography. Clark University.

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