Vlamings, P. H. J. M., Hare, B., & Call, J. (2009). Reaching around barriers: The performance of the great apes and 3–5-year-old children. Springer-Verlag.
Chicago-tyylinen lähdeviittausVlamings, Petra H. J. M., Brian Hare, ja Josep Call. Reaching Around Barriers: The Performance of the Great Apes and 3–5-year-old Children. Springer-Verlag, 2009.
MLA-viiteVlamings, Petra H. J. M., Brian Hare, ja Josep Call. Reaching Around Barriers: The Performance of the Great Apes and 3–5-year-old Children. Springer-Verlag, 2009.
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