Παραπομπή APA

National productivity council. (1964). Materials handling in West Germany Britain and USA. National productivity council.

Παραπομπή Chicago Style

National productivity council. Materials Handling in West Germany Britain and USA. New Delhi: National productivity council, 1964.

Παραπομπή MLA

National productivity council. Materials Handling in West Germany Britain and USA. National productivity council, 1964.