Autor:	Pavan, Barbara Nelson, Gage, N. L., Sasaki, Irvin K., Cline, Starr, Hogan, Nancy Schildberg, Smith, William R., Shostak, Arthur B., Abrell, Ron, Walling, Donovas R., Leibrecht, John J., Stell, Bernard S., Doerr, Edd, Ehlers, Henry, Ricker, Kenneth S., Downing, John, Allen, Harold Don, Swanson, Gordon
Zdroj:	The Phi Delta Kappan, 1979 Feb 01. 60(6), 474-476.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/20299443 Zobrazit plný text záznamu