[1] Sierra Nevada Bighorn Sheep Foundation. 2000. Sierra Nevada Bighorn Population Status, Census Work 1995. Available at <www.sierrabighorn.org/endanger/population_status.htm>
[2] Sierra Nevada Bighorn Sheep Foundation. 2002. Sierra Nevada Bighorn Sheep 2002 Update, Herds Continue to grow. Available at <www.sierrabighorn.org/endanger/2002%20update.htm>.