McNeill, D., McCullough, K., & Duncan, S. D. An ontogenetic universal and how to explain it: David McNeill. Karl-Erik McCullough. The semantics and pragmatics of everyday gestures : proceedings of the Berlin conference April 1998.(2004).

McNeill, David, Karl-Erik McCullough, and Susan D. Duncan. "An Ontogenetic Universal and How to Explain It: David McNeill. Karl-Erik McCullough." The Semantics and Pragmatics of Everyday Gestures : Proceedings of the Berlin Conference April 1998.(2004) .

McNeill, David, et al. "An Ontogenetic Universal and How to Explain It: David McNeill. Karl-Erik McCullough." The Semantics and Pragmatics of Everyday Gestures : Proceedings of the Berlin Conference April 1998.(2004), .