Valentina V. Ukraintseva. (2013). Mammoths and the Environment (1.). Cambridge University Press.
Chicago-viite (17. p.)Valentina V. Ukraintseva. Mammoths and the Environment. 1. Cambridge University Press, 2013.
MLA-viite (8. p.)Valentina V. Ukraintseva. Mammoths and the Environment. 1. Cambridge University Press, 2013.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.