APA استشهاد

National productivity council. (1960). Road transport industry in West Germany U K & U S A. National productivity council.

استشهاد بنمط شيكاغو

National productivity council. Road Transport Industry in West Germany U K & U S A. India: National productivity council, 1960.

MLA استشهاد

National productivity council. Road Transport Industry in West Germany U K & U S A. National productivity council, 1960.