Wilbur, D. C., Davey, D. D., Kurman, R. J., Solomon, D., & Nayar, R. (2004). The Bethesda system for reporting cervical cytology: Definitions, criteria, and explanatory notes (2nd ed.). New York: Springer.

Wilbur, David C., Diane D. Davey, Robert J. Kurman, Diane Solomon, and Ritu Nayar. The Bethesda System for Reporting Cervical Cytology: Definitions, Criteria, and Explanatory Notes. 2nd ed. New York: Springer, 2004.

Wilbur, David C., et al. The Bethesda System for Reporting Cervical Cytology: Definitions, Criteria, and Explanatory Notes. 2nd ed. New York: Springer, 2004.