APA استشهاد

National productivity council. (1962). Incentives in industry in west germany,USA and Japan. National Productivity council.

استشهاد بنمط شيكاغو

National productivity council. Incentives in Industry in West Germany,USA and Japan. New Delhi: National Productivity council, 1962.

MLA استشهاد

National productivity council. Incentives in Industry in West Germany,USA and Japan. National Productivity council, 1962.