Todd, N. E. 2001. African Elephas recki: Time, space and taxonomy. In: Cavarretta, G., P. Gioia, M. Mussi, and M. R. Palombo. The World of Elephants, Proceedings of the 1st International Congress. Consiglio Nazionale delle Ricerche. Rome, Italy. [1] [Архівовано 16 грудня 2008 у Wayback Machine.]
Todd, N. E. 2001. African Elephas recki: Time, space and taxonomy. In: Cavarretta, G., P. Gioia, M. Mussi, and M. R. Palombo. The World of Elephants, Proceedings of the 1st International Congress. Consiglio Nazionale delle Ricerche. Rome, Italy. [1] [Архівовано 16 грудня 2008 у Wayback Machine.]