Autor:	Klopfer, Leon, Klopfer, Leopold E., Abegg, Gerald L., Batoff, Mitchell E., Doyle, Jerry, Finley, Fred N., Horak, Willis, Keane, Judith, Luncsford, Daniel, Lunetta, Vincent N.
Zdroj:	Journal of College Science Teaching, 1984 Feb 01. 13(4), 249-272.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/42989241 Zobrazit plný text záznamu