Sproull Bob. (2018). Problem Solving, Problem Prevention and Decision Making Guide. Routledge.
Chicago-referens (17:e uppl.)Sproull Bob. Problem Solving, Problem Prevention and Decision Making Guide. Routledge, 2018.
MLA-referens (9:e uppl.)Sproull Bob. Problem Solving, Problem Prevention and Decision Making Guide. Routledge, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.