Dyfyniad APA

Williams, C. M. (1968). Learning from pictures (2d ed.). Dept. of Audiovisual Instruction, National Education Association.

Dyfyniad Arddull Chicago

Williams, Catharine M. Learning from Pictures. 2d ed. Washington: Dept. of Audiovisual Instruction, National Education Association, 1968.

Dyfyniad MLA

Williams, Catharine M. Learning from Pictures. 2d ed. Dept. of Audiovisual Instruction, National Education Association, 1968.

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