Arroyo, A., Hirata, S., Matsuzawa, T., & de la Torre, I. (2016). Nut Cracking Tools Used by Captive Chimpanzees (Pan troglodytes) and Their Comparison with Early Stone Age Percussive Artefacts from Olduvai Gorge. PLoS One.
Chicago Style citaatArroyo, Adrián, Satoshi Hirata, Tetsuro Matsuzawa, en Ignacio de la Torre. "Nut Cracking Tools Used By Captive Chimpanzees (Pan Troglodytes) and Their Comparison With Early Stone Age Percussive Artefacts From Olduvai Gorge." PLoS One 2016.
MLA citatieArroyo, Adrián, Satoshi Hirata, Tetsuro Matsuzawa, en Ignacio de la Torre. "Nut Cracking Tools Used By Captive Chimpanzees (Pan Troglodytes) and Their Comparison With Early Stone Age Percussive Artefacts From Olduvai Gorge." PLoS One 2016.
Let op: Deze citaties zijn niet altijd 100% accuraat.