1. Arslan, D., Legendre, M., Seltzer, V., Abergel, C., & Claverie, J. M. (2011). Distant mimivirus relative with a larger genome highlights the fundamental features of Megaviridae. Proceedings of the National Academy of Sciences USA, 108, 17486–17491.
2. Atran, S. (1990). The cognitive foundations of natural history. New York: Cambridge University Press.
3. Avise, J. C., & Ball, R. M, Jr. (1990). Principles of genealogical concordance in species concepts and biological taxonomy. In D. Futuyma & J. Atonovics (Eds.), Oxford surveys in evolutionary biology (pp. 45–67). Oxford: Oxford University Press.
4. Bagatto, B., Crossley, D. A., & Burggren, W. W. (2000). Physiological variability in neonatal armadillo quadruplets: Within- and between-litter differences. The Journal of Experimental Biology, 203, 1733–1740.
5. Barnes, R. D. (1982). Invertebrate zoology. Philadelphia, PA: Holt-Saunders International. ISBN 0-03-056747-5.