APA استشهاد

Vernon, P. E. (1950). Structure of human abilities. Methuen & Co.

استشهاد بنمط شيكاغو

Vernon, Philip E. Structure of Human Abilities. London: Methuen & Co, 1950.

MLA استشهاد

Vernon, Philip E. Structure of Human Abilities. Methuen & Co, 1950.