Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.