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Citations
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Povinelli DJ. (1987). Monkeys, apes, mirrors and minds: the evolution of self-awareness in primates. J. Hum. Evol., 2, 493.
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Kortlandt A. (1986). The use of tools by wild-living chimpanzees and earliest hominids. J. Hum. Evol.,, 15, 77.
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Boesch C, & Boesch H. (1984). Possible causes of sex differences in the use of natural hammers by wild chimpanzees. J. Hum. Evol., 13, 415.
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Galdikas BMF. (1982). Orang-utan tool-use in Tanjung Puting Reserve, Central Borneo (Kalimantan Tengah). J. Hum. Evol., 10, 19.
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Nishida T, & Hiraiwa M. (1982). Natural history of tool-using behavior by wild chimpanzees in feeding upon wood-boring ants. J. Hum. Evol., 11, 73.
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McGrew WC. (1974). Tool use by wild chimpanzees in feeding upon driver ants. J. Hum. Evol., 3, 501.
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