Não informado. (1978). Metalworking, Engineering and Marketing. News Digest.
Chicago-Zitierstil (17. Ausg.)Não informado. Metalworking, Engineering and Marketing. Nagoya, Japão: News Digest, 1978.
MLA-Zitierstil (8. Ausg.)Não informado. Metalworking, Engineering and Marketing. News Digest, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.