L. David Mech. «Schenkel's Classic Wolf Behavior Study Available in English». Arxivat de l'original el 10 d’agost 2013. [Consulta: 21 abril 2008]. «...Schenkel's 1947 “Expressions Studies on Wolves”, the study that gave rise to the now outmoded notion of alpha wolves.»
Mech, L. David. «Alpha Status, Dominance, and Division of Labor in Wolf Packs». Jamestown, ND: Northern Prairie Wildlife Research Center Online. Canadian Journal of Zoology 77:1196-1203, 1999. [Consulta: 21 abril 2008]. «The point here is not so much the terminology but what the terminology falsely implies: a rigid, force-based dominance hierarchy.»
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L. David Mech. «Schenkel's Classic Wolf Behavior Study Available in English». Arxivat de l'original el 10 d’agost 2013. [Consulta: 21 abril 2008]. «...Schenkel's 1947 “Expressions Studies on Wolves”, the study that gave rise to the now outmoded notion of alpha wolves.»