Autor:	Davis,, Ronald D., Diswood, Samuel, Dominguez, Annette, Engel-Wilson, Ronald W., Jefferson, Keith, Miles, A. Keith, Moore, Elizabeth F., Reidinger, Russell, Ruther, Sherry, Valdez, Raul, Wilson, Kenneth, Zablan, Marilet A.
Zdroj:	Wildlife Society Bulletin (1973-2006), 2002 Jul 01. 30(2), 628-633.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/3784527 Plný text