Bates, Lucy A; Sayialel, Katito N; Njiraini, Norah W; Poole, Joyce H; Moss, Cynthia J; Byrne, Richard W (2007-12-04). "African elephants have expectations about the locations of out-of-sight family members". Biology Letters (به انگلیسی). The Royal Society. 4 (1): 34–36. doi:10.1098/rsbl.2007.0529. ISSN1744-9561.
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«News». The Elephant Sanctuary. دریافتشده در ۲۰۲۱-۰۱-۱۶.
Bates, Lucy A; Sayialel, Katito N; Njiraini, Norah W; Poole, Joyce H; Moss, Cynthia J; Byrne, Richard W (2007-12-04). "African elephants have expectations about the locations of out-of-sight family members". Biology Letters (به انگلیسی). The Royal Society. 4 (1): 34–36. doi:10.1098/rsbl.2007.0529. ISSN1744-9561.