Cita APA (7a ed.)

Watzlawick, P., & weakland, J. H. (1974). Change: Principles of problem formation and problem resolution (ed.). W. W. Norton & company Inc..

Cita Chicago Style (17a ed.)

Watzlawick, Paul, y John H. weakland. Change: Principles of Problem Formation and Problem Resolution. ed. New York: W. W. Norton & company Inc., 1974.

Cita MLA (9a ed.)

Watzlawick, Paul, y John H. weakland. Change: Principles of Problem Formation and Problem Resolution. ed. W. W. Norton & company Inc., 1974.