Autor:	Stager, Kenneth E., Wiggins, Ira L., Carter, Dennis L., Wauer, Roland H., Wotton, Michael, Marshall, David B., Fleetwood, Raymond J., Bolen, Eric G., Abbott, Waldo G., Wheeler, Richard J., Davis, John, Weeden, Robert B., McCaskie, R. G., Kramer, Peter, Hardy, James L., Roberts, Don R., Banks, Richard C., Leopold, A. Starker
Zdroj:	The Condor, 1965 Jan 01. 67(1), 81-91.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1365383 Zobrazit plný text záznamu