Cita APA (7th ed.)
Ringland, G., & Schwartz, P. Scenario Planning: Managing for the Future. Wiley.
Cita Chicago (17th ed.)
Ringland, Gill, i Peter Schwartz. Scenario Planning: Managing for the Future. Chichester, Inglaterra: Wiley.
Cita MLA (9th ed.)
Ringland, Gill, i Peter Schwartz. Scenario Planning: Managing for the Future. Wiley.
Atenció: Aquestes cites poden no estar 100% correctes.