Gaffey, J. D. (1968). The productivity of labor in the rubber tire manufacturing industry. AMS Press.
Chicago-referens (17:e uppl.)Gaffey, John Dean. The Productivity of Labor in the Rubber Tire Manufacturing Industry. New York: AMS Press, 1968.
MLA-referens (9:e uppl.)Gaffey, John Dean. The Productivity of Labor in the Rubber Tire Manufacturing Industry. AMS Press, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.