sack, k., & linsel, h. (1966). general organization of planning of industry (ed. 2.). National Planning Institute.
Cytowanie według stylu Chicago (wyd. 17)sack, kurt, i hermann linsel. General Organization of Planning of Industry. ed. 2. cairo: National Planning Institute, 1966.
Cytowanie według stylu MLA (wyd. 9)sack, kurt, i hermann linsel. General Organization of Planning of Industry. ed. 2. National Planning Institute, 1966.