Dyfyniad APA

Leahey, T. H., & Harris, R. J. (1993). Learning and cognition (3rd ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Leahey, Thomas Hardy, and Richard Jackson Harris. Learning and Cognition. 3rd ed. Englewood Cliffs, N.J: Prentice Hall, 1993.

Dyfyniad MLA

Leahey, Thomas Hardy, and Richard Jackson Harris. Learning and Cognition. 3rd ed. Prentice Hall, 1993.

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