Dyfyniad APA

Webster, W. C. (1918). A general history of commerce (Rev. ed.). Ginn & company.

Dyfyniad Arddull Chicago

Webster, William Clarence. A General History of Commerce. Rev. ed. Boston ; New York [etc.]: Ginn & company, 1918.

Dyfyniad MLA

Webster, William Clarence. A General History of Commerce. Rev. ed. Ginn & company, 1918.

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