sach, k., & linsel, h. (1965). management in socialist industry and enterprises. National Planning Institute.
Παραπομπή σε μορφή Chicago (17η εκδ.)sach, kurt, και hermann linsel. Management in Socialist Industry and Enterprises. cairo: National Planning Institute, 1965.
Παραπομπή σε μορφή MLA (9th εκδ.)sach, kurt, και hermann linsel. Management in Socialist Industry and Enterprises. National Planning Institute, 1965.