Dyfyniad APA

Sekuler, R., & Blake, R. (1994). Perception (3rd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Sekuler, Robert, and Randolph Blake. Perception. 3rd ed. New York: McGraw-Hill, 1994.

Dyfyniad MLA

Sekuler, Robert, and Randolph Blake. Perception. 3rd ed. McGraw-Hill, 1994.

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