APA
Robert Hatcher, James D. Shelton, Judith S. Geller, Richard Blackburn & Ward Rinehart. (2000). Elementos de la tecnologie de la contraception. U.S.A: OMS.
Chicago
Robert Hatcher, James D. Shelton, Judith S. Geller, Richard Blackburn and Ward Rinehart. 2000. Elementos de la tecnologie de la contraception. U.S.A: OMS.
Harvard
Robert Hatcher, James D. Shelton, Judith S. Geller, Richard Blackburn and Ward Rinehart. (2000). Elementos de la tecnologie de la contraception. U.S.A: OMS.
MLA
Robert Hatcher, James D. Shelton, Judith S. Geller, Richard Blackburn and Ward Rinehart. Elementos de la tecnologie de la contraception. U.S.A: OMS. 2000.