3Cao, Jinghua. The Search for Female Identity : Women Characters in Willa Cather's Fictional World. Beijing:Chinese People's Liberation Army P, 1995.
4Cather, Willa. O Pioneers! New York: Bantam Books, 1989.
5Crowley, Vivianne. "Healing in Wicea." Daughters of the Goddess.. Studies of Healing, Identity and Empowerment. Ed. Wendy Griffin. Lanham: Alta Mira,2000.