Autor:	shartel, Carroll L., Casaday, L. W., Witte, Edwin E., Gray, Robert D., Tiffin, Joseph, Troxell, John P., Hopkins, William S., Coleman, R. W., Reigh, Nathan, McKitterick, Nathaniel M.
Zdroj:	Industrial and Labor Relations Review, 1956 Jan 01. 9(2), 329-338.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/2519455 Zobrazit plný text záznamu