sach, k., & linsel, h. (1965). management in socialist industry and enterprises. National Planning Institute.
Čikaški stil citiranja (17. izdanje)sach, kurt, i hermann linsel. Management in Socialist Industry and Enterprises. cairo: National Planning Institute, 1965.
MLA način citiranja (9. izdanje)sach, kurt, i hermann linsel. Management in Socialist Industry and Enterprises. National Planning Institute, 1965.