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Greenberg et al. 2010, p. 873. Greenberg, Julia R.; Hamann, Katharina; Warneken, Felix; Tomasello, Michael (2010). "Chimpanzee helping in collaborative and noncollaborative contexts". Animal Behaviour. 80 (5): 873–880. doi:10.1016/j.anbehav.2010.08.008. S2CID17708181.
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Brosnan, Freeman & de Waal 2006, p. 713. Brosnan, Sarah F.; Freeman, Cassiopeia; de Waal, Frans B. M. (2006). "Partner's behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys". American Journal of Primatology. 68 (7): 713–724. doi:10.1002/ajp.20261. PMID16786518. S2CID6550286.
King et al. 2016. King, Stephanie L.; Allen, Simon J.; Connor, Richard C.; Jaakkola, Kelly (2016). "Cooperation or dolphin 'tug-of-war'? Comment on Kuczaj et al. and Eskelinen et al". Animal Cognition. 19 (6): 1227–1229. doi:10.1007/s10071-016-1026-x. PMID27580617. S2CID3910958.
Boesch & Boesch 1989. Boesch, Christophe; Boesch, Hedwige (1989). "Hunting behavior of wild chimpanzees in the Tai National Park". American Journal of Physical Anthropology. 78 (4): 547–573. doi:10.1002/ajpa.1330780410. PMID2540662.
Suchak et al. 2018, p. 87. Suchak, M.; Watzek, J.; Quarles, L. F.; de Waal, F. B. (2018). "Novice chimpanzees cooperate successfully in the presence of experts, but may have limited understanding of the task". Animal Cognition. 21 (1): 87–98. doi:10.1007/s10071-017-1142-2. PMID29147914. S2CID3899981.
Visalberghi, Quarantotti & Tranchida 2000, p. 300. Visalberghi, Elisabetta; Quarantotti, Benedetta P.; Tranchida, Flaminia (2000). "Solving a cooperation task without taking into account the partner's behavior: The case of capuchin monkeys (Cebus apella)". Journal of Comparative Psychology. 114 (3): 297–301. doi:10.1037/0735-7036.114.3.297. PMID10994846.
Brosnan, Freeman & de Waal 2006, p. 713. Brosnan, Sarah F.; Freeman, Cassiopeia; de Waal, Frans B. M. (2006). "Partner's behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys". American Journal of Primatology. 68 (7): 713–724. doi:10.1002/ajp.20261. PMID16786518. S2CID6550286.
King et al. 2016. King, Stephanie L.; Allen, Simon J.; Connor, Richard C.; Jaakkola, Kelly (2016). "Cooperation or dolphin 'tug-of-war'? Comment on Kuczaj et al. and Eskelinen et al". Animal Cognition. 19 (6): 1227–1229. doi:10.1007/s10071-016-1026-x. PMID27580617. S2CID3910958.
Greenberg et al. 2010, p. 876. Greenberg, Julia R.; Hamann, Katharina; Warneken, Felix; Tomasello, Michael (2010). "Chimpanzee helping in collaborative and noncollaborative contexts". Animal Behaviour. 80 (5): 873–880. doi:10.1016/j.anbehav.2010.08.008. S2CID17708181.
Suchak et al. 2018, p. 87. Suchak, M.; Watzek, J.; Quarles, L. F.; de Waal, F. B. (2018). "Novice chimpanzees cooperate successfully in the presence of experts, but may have limited understanding of the task". Animal Cognition. 21 (1): 87–98. doi:10.1007/s10071-017-1142-2. PMID29147914. S2CID3899981.
Greenberg et al. 2010, p. 873. Greenberg, Julia R.; Hamann, Katharina; Warneken, Felix; Tomasello, Michael (2010). "Chimpanzee helping in collaborative and noncollaborative contexts". Animal Behaviour. 80 (5): 873–880. doi:10.1016/j.anbehav.2010.08.008. S2CID17708181.
Greenberg et al. 2010, p. 879. Greenberg, Julia R.; Hamann, Katharina; Warneken, Felix; Tomasello, Michael (2010). "Chimpanzee helping in collaborative and noncollaborative contexts". Animal Behaviour. 80 (5): 873–880. doi:10.1016/j.anbehav.2010.08.008. S2CID17708181.
Brosnan, Freeman & de Waal 2006, p. 713. Brosnan, Sarah F.; Freeman, Cassiopeia; de Waal, Frans B. M. (2006). "Partner's behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys". American Journal of Primatology. 68 (7): 713–724. doi:10.1002/ajp.20261. PMID16786518. S2CID6550286.
King et al. 2016. King, Stephanie L.; Allen, Simon J.; Connor, Richard C.; Jaakkola, Kelly (2016). "Cooperation or dolphin 'tug-of-war'? Comment on Kuczaj et al. and Eskelinen et al". Animal Cognition. 19 (6): 1227–1229. doi:10.1007/s10071-016-1026-x. PMID27580617. S2CID3910958.