International Institute for Applied Systems Analysis. (2019). .Options: .The power of the crowd. International Institute for Applied Systems Analysis.
Chicago-referens (17:e uppl.)International Institute for Applied Systems Analysis. .Options: .The Power of the Crowd. New york: International Institute for Applied Systems Analysis, 2019.
MLA-referens (9:e uppl.)International Institute for Applied Systems Analysis. .Options: .The Power of the Crowd. International Institute for Applied Systems Analysis, 2019.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.