APA aipamena

National productivity council & Altekar, V. (1975). Productivity. National productivity council.

Chicago Style aipamena

National productivity council and V.A Altekar. Productivity. New Delhi: National productivity council, 1975.

MLA aipamena

National productivity council and V.A Altekar. Productivity. National productivity council, 1975.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.