Blackaby, Susan, and Carmen Segovia. Brownie Groundhog and the February Fox.
New York: Sterling, 2011. Print.
Kherdian, David, and Nonny Hogrogian. Come Back, Moon. , 2013. Print.
Holland, Mary. Ferdinand Fox's First Summer. Mt. Pleasant, SC: Sylvan Dell Publishing, 2013. Print.
Hogrogian, Nonny, and Nonny Hogrogian. One Fine Day. New York: Macmillan Co, 1971. Print.
Waring, Richard, and Caroline Church. Hungry Hen. New York: HarperCollins Publishers, 2001. Print.
ps. To find out what the fox really says, read this excellent article from Popular Science magazine: