Dyfyniad APA

Kaufman, R. A. (1976). Identifying and solving problems: A system approach. University Associates.

Dyfyniad Arddull Chicago

Kaufman, Roger A. Identifying and Solving Problems: A System Approach. La Jolla, Calif.: University Associates, 1976.

Dyfyniad MLA

Kaufman, Roger A. Identifying and Solving Problems: A System Approach. University Associates, 1976.

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