Cita APA (7a ed.)

Kahney, H. (1986). Problem solving: A cognitive approach. Open University Press.

Cita Chicago Style (17a ed.)

Kahney, Hank. Problem Solving: A Cognitive Approach. Milton Keynes [etc.]: Open University Press, 1986.

Cita MLA (9a ed.)

Kahney, Hank. Problem Solving: A Cognitive Approach. Open University Press, 1986.