Παραπομπή σε μορφή APA (7η εκδ.)

sack, K., & linsel, h. (1966). planning of technical progress in industry: Planning of temporal progress of research and development. the institute of national planning.

Παραπομπή σε μορφή Chicago (17η εκδ.)

sack, Kurt, και hermann linsel. Planning of Technical Progress in Industry: Planning of Temporal Progress of Research and Development. cairo: the institute of national planning, 1966.

Παραπομπή σε μορφή MLA (9th εκδ.)

sack, Kurt, και hermann linsel. Planning of Technical Progress in Industry: Planning of Temporal Progress of Research and Development. the institute of national planning, 1966.