Não informado. (1969). Machine shop and metalworking economics. Engineering, Chemical & Machine Press.
Chicago-Zitierstil (17. Ausg.)Não informado. Machine Shop and Metalworking Economics. London: Engineering, Chemical & Machine Press, 1969.
MLA-Zitierstil (8. Ausg.)Não informado. Machine Shop and Metalworking Economics. Engineering, Chemical & Machine Press, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.