Citazione Stile APA (7a Edizione)

Walberg, F., & Reisbord, L. (1980). Puzzle thinking: Steps to logical thinking and problem solving. The Franklin Institute Press.

Citazione stile Chigago Style (17a edizione)

Walberg, Franette, e Lynne Reisbord. Puzzle Thinking: Steps to Logical Thinking and Problem Solving. Philadelphia, PA: The Franklin Institute Press, 1980.

Citatione MLA (9a ed.)

Walberg, Franette, e Lynne Reisbord. Puzzle Thinking: Steps to Logical Thinking and Problem Solving. The Franklin Institute Press, 1980.