Dyfyniad APA

Gregory, R. L. (1974). Concepts and mechanisms of perception. Duckworth.

Dyfyniad Arddull Chicago

Gregory, R. L. Concepts and Mechanisms of Perception. London: Duckworth, 1974.

Dyfyniad MLA

Gregory, R. L. Concepts and Mechanisms of Perception. Duckworth, 1974.

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