Dyfyniad APA

U. S. invitational conference on. (1967). Proceeding. Educational Testing Service.

Dyfyniad Arddull Chicago

U. S. invitational conference on. Proceeding. New Jersy: Educational Testing Service, 1967.

Dyfyniad MLA

U. S. invitational conference on. Proceeding. Educational Testing Service, 1967.

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