Autor:	Somers, Gerald G., Derber, Milton, Streib, Gordon F., Yoder, Dale, Holt, Grant R., Hopkins, William S., Orr, Charles A., Pearce, Charles A.
Zdroj:	Industrial and Labor Relations Review, 1958 Jul 01. 11(4), 655-663.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/2519379 Zobrazit plný text záznamu