Garcia, Celso-Ramon, and Edward E. Wallach. "Biochemical Changes and Implications Following Long-Term Use of Oral Contraception." N.p., undated

Garcia, Celso-Ramon, and Edward E. Wallach. "Biochemical Changes and Implications Following Long-Term Use of Oral Contraception." N.p., undated, Box: 172, Folder: 8. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389089 Accessed September 27, 2026.