Cita APA

Hill, A. B., & Hill, I. D. (1991). Bradford Hill's Principles of Medical Statistics (12th ed.). B. I. Publications.

Citación estilo Chicago

Hill, Austin Bradford, and I. D. Hill. Bradford Hill's Principles of Medical Statistics. 12th ed. New Delhi: B. I. Publications, 1991.

Cita MLA

Hill, Austin Bradford, and I. D. Hill. Bradford Hill's Principles of Medical Statistics. 12th ed. B. I. Publications, 1991.