Παραπομπή σε μορφή APA (7η εκδ.)

sack, k., & linsel, h. (1965). contents and measuring of labour productivity in socialist industry. the institute of national planning.

Παραπομπή σε μορφή Chicago (17η εκδ.)

sack, kurt, και hermann linsel. Contents and Measuring of Labour Productivity in Socialist Industry. cairo: the institute of national planning, 1965.

Παραπομπή σε μορφή MLA (9th εκδ.)

sack, kurt, και hermann linsel. Contents and Measuring of Labour Productivity in Socialist Industry. the institute of national planning, 1965.