Dyfyniad APA

Proctor, W. M. (1929). Vocations: The world's work and its workers. Houghton Mifflin Company.

Dyfyniad Arddull Chicago

Proctor, William Martin. Vocations: The World's Work and Its Workers. Boston : New York [etc.]: Houghton Mifflin Company, 1929.

Dyfyniad MLA

Proctor, William Martin. Vocations: The World's Work and Its Workers. Houghton Mifflin Company, 1929.

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