Standard work on the subject; 20th edition, New York: Arden Media, 2011. Hatcher originated the work in 1978. Collaborators on the 20th edition are Hatcher, Kowal, Nelson, Policar, and Trusell. An offshoot of the main book is Hatcher, Rinehart, W., Blackburn, R. Geller, J. S., and Sheldon, J.D. The essentials of contraceptive technology. Baltimore: Johns Hopkins Bloomberg School of Public Health, Population Information Program, 1997.