European bison : status survey and conservation action plan
Zdzisław Pucek (Editor), Irina P. Belousova (Compiler), Małgorzata Krasińska, Zbigniew A. Krasiński (Compiler), Wanda Olech (Compiler), IUCN/SSC Bison Specialist Group, IUCN--The World Conservation Union
Print Book, English, 2004
IUCN, Gland, 2004