Dyfyniad APA

- & TUMA, D. [. (1980). Problem solving and education: Issues in teaching andresearch. John Wiley and Sons.

Dyfyniad Arddull Chicago

- and D.T. [ed.] TUMA. Problem Solving and Education: Issues in Teaching Andresearch. New York: John Wiley and Sons, 1980.

Dyfyniad MLA

- and D.T. [ed.] TUMA. Problem Solving and Education: Issues in Teaching Andresearch. John Wiley and Sons, 1980.

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