Autor:	Lewis, H. G., Field, Louise, Miller, Taulman A., Flanagan, John C., Hardwick, Clyde T., Peter, Hollis W., Stewart, Lois, Somers, Gerald G.
Zdroj:	Industrial and Labor Relations Review, 1957 Jan 01. 10(2), 346-352.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/2519561 Zobrazit plný text záznamu