Shumaker, R. W., Walkup, K. R., & Beck, B. B. (2011). Animal tool behavior: The use and manufacture of tools by animals (Rev. and updated ed.). Johns Hopkins Univ. Press.
Chicago-Zitierstil (17. Ausg.)Shumaker, Robert W., Kristina R. Walkup, und Benjamin B. Beck. Animal Tool Behavior: The Use and Manufacture of Tools by Animals. Rev. and updated ed. Baltimore: Johns Hopkins Univ. Press, 2011.
MLA-Zitierstil (9. Ausg.)Shumaker, Robert W., et al. Animal Tool Behavior: The Use and Manufacture of Tools by Animals. Rev. and updated ed. Johns Hopkins Univ. Press, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.