Citazione Stile APA (7a Edizione)
Watzlawick, P., Weakland, J. H., & Fisch, R. (1974). Change: Principles of problem formation and problem resolution. Norton.
Citazione stile Chigago Style (17a edizione)
Watzlawick, Paul, John H. Weakland, e Richard Fisch. Change: Principles of Problem Formation and Problem Resolution. New York: Norton, 1974.
Citatione MLA (9a ed.)
Watzlawick, Paul, et al. Change: Principles of Problem Formation and Problem Resolution. Norton, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.