Schiersmann, C. (2012). System modelling. NICE handbook for the academic training of career guidance and counselling professionals.
Chicago-Zitierstil (17. Ausg.)Schiersmann, Christiane. "System Modelling." NICE Handbook for the Academic Training of Career Guidance and Counselling Professionals 2012.
MLA-Zitierstil (9. Ausg.)Schiersmann, Christiane. "System Modelling." NICE Handbook for the Academic Training of Career Guidance and Counselling Professionals, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.