Dyfyniad APA

Gibson, E. J. (1969). Principles of perceptual learning and development. Appleton-Century-Crofts.

Dyfyniad Arddull Chicago

Gibson, Eleanor Jack. Principles of Perceptual Learning and Development. New York: Appleton-Century-Crofts, 1969.

Dyfyniad MLA

Gibson, Eleanor Jack. Principles of Perceptual Learning and Development. Appleton-Century-Crofts, 1969.

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