Cita APA (7a ed.)

Watzlawick, P. (1988). Ultra-solutions or how to fail most successfully. W.W. Norton.

Cita Chicago Style (17a ed.)

Watzlawick, Paul. Ultra-solutions or How to Fail Most Successfully. New York [etc.]: W.W. Norton, 1988.

Cita MLA (9a ed.)

Watzlawick, Paul. Ultra-solutions or How to Fail Most Successfully. W.W. Norton, 1988.