• [Wiki] http://en.wikipedia.org/wiki/Equus_hemionus.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Equus_hemionus.
• [ADW] https://animaldiversity.org/accounts/Equus_hemionus/.
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• [NacaJord2017] Nacarino-Meneses, C., Jordana, X., Orlandi-Oliveras1, G., and Köhler, M. (2017). Reconstructing molar growth from enamel histology in extant and extinct Equus. Scientific Reports, 7:15965. doi:110.1038/s41598-017-16227-2.