• [Wiki] http://en.wikipedia.org/wiki/Ochotona_princeps.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Ochotona_princeps.
• [GoliWhit1985] Golian, S. and Whitworth, M. R. (2016). Growth of pikas (Ochotona princeps in Colorado)). J. Mamm,, 66:367--371.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.