Bates, L. A., Sayialel, K. N., Njiraini, N. W., Poole, J. H., Moss, C. J., & Byrne, R. W. (2007). African elephants have expectations about the locations of out-of-sight family members. The Royal Society.

Bates, Lucy A., Katito N. Sayialel, Norah W. Njiraini, Joyce H. Poole, Cynthia J. Moss, a Richard W. Byrne. African Elephants Have Expectations About the Locations of Out-of-sight Family Members. The Royal Society, 2007.

Bates, Lucy A., et al. African Elephants Have Expectations About the Locations of Out-of-sight Family Members. The Royal Society, 2007.