Berkowitz, E. D., & Santangelo, M. J. (1999). The Medical Follow-up Agency: The first fifty years, 1946-1996. National Academy Press.
Lua i Stíl Chicago (17ú heag.)Berkowitz, Edward D., agus Mark J. Santangelo. The Medical Follow-up Agency: The First Fifty Years, 1946-1996. Washington, D.C.: National Academy Press, 1999.
Lua MLA (9ú heag.)Berkowitz, Edward D., agus Mark J. Santangelo. The Medical Follow-up Agency: The First Fifty Years, 1946-1996. National Academy Press, 1999.
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