Dyfyniad APA

Mayer, R. E. (1991). Thinking, problem solving, cognition (2nd. ed.). W. H. Freeman and company.

Dyfyniad Arddull Chicago

Mayer, Richard E. Thinking, Problem Solving, Cognition. 2nd. ed. New York: W. H. Freeman and company, 1991.

Dyfyniad MLA

Mayer, Richard E. Thinking, Problem Solving, Cognition. 2nd. ed. W. H. Freeman and company, 1991.

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