Barton, M. (2001). The international wildlife encyclopedia Vol 1 to Vol 21. Marshall Cavendish corporation.
Chicago-čujuhus (17. p.)Barton, Maurice. The International Wildlife Encyclopedia Vol 1 to Vol 21. New York: Marshall Cavendish corporation, 2001.
MLA-čujuhus (9. p.)Barton, Maurice. The International Wildlife Encyclopedia Vol 1 to Vol 21. Marshall Cavendish corporation, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.