Okon, E. (2013). The World of Bats. Obafemi Awolowo University Press.
Chicago-čujuhus (17. p.)Okon, Eyo.E. The World of Bats. Obafemi Awolowo University Press, 2013.
MLA-čujuhus (9. p.)Okon, Eyo.E. The World of Bats. Obafemi Awolowo University Press, 2013.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.