Macdonald, David W. (26. 4. 2010). „Food Caching by Red Foxes and Some Other Carnivores”. Zeitschrift für Tierpsychologie. 42 (2): 170—185. PMID1007654. doi:10.1111/j.1439-0310.1976.tb00963.x.
Macdonald, David W. (26. 4. 2010). „Food Caching by Red Foxes and Some Other Carnivores”. Zeitschrift für Tierpsychologie. 42 (2): 170—185. PMID1007654. doi:10.1111/j.1439-0310.1976.tb00963.x.
Parkes, I. W. Rowlands and A. S. (21. 8. 2009). „The Reproductive Processes of certain Mammals.-VIII. Reproduction in Foxes (Vulpes spp.).”. Proceedings of the Zoological Society of London. 105 (4): 823—841. doi:10.1111/j.1469-7998.1935.tb06267.x.
Macdonald, David W. (26. 4. 2010). „Food Caching by Red Foxes and Some Other Carnivores”. Zeitschrift für Tierpsychologie. 42 (2): 170—185. PMID1007654. doi:10.1111/j.1439-0310.1976.tb00963.x.
Macdonald, David W. (26. 4. 2010). „Food Caching by Red Foxes and Some Other Carnivores”. Zeitschrift für Tierpsychologie. 42 (2): 170—185. PMID1007654. doi:10.1111/j.1439-0310.1976.tb00963.x.