Dyfyniad APA

(1962). The social studies and the social sciences. New York: Harcourt, Brace & World.

Dyfyniad Arddull Chicago

The Social Studies and the Social Sciences. New York: Harcourt, Brace & World, 1962.

Dyfyniad MLA

The Social Studies and the Social Sciences. New York: Harcourt, Brace & World, 1962.

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