1. Specialty Profiles, 1988 edition;Eiler,1988
2. Trends in evolution of specialty choice. Comparison of U.S. medical school graduates in 1983 and 1987;Babbott;JAMA,1989
3. Directory of Residency Training Programs,1979
4. Directory of Graduate Medical Education Programs, 1989–1990,1989
5. Socio-Economic Factbook for Surgery 1989,1989