(en) Need for more effective management of community mental heaIth centers program, United States - General Accounting Office, , 100 p. (lire en ligne)
hhs.gov
(en) Digital Communications Division (DCD), Assistant Secretary for Public Affairs (ASPA), « OASH Organization Chart », HHS.gov, (lire en ligne).
issn.org
portal.issn.org
(en-US) Marie Winn, « The Legacy of Dr. Koop », The New York Times, (ISSN0362-4331, lire en ligne, consulté le ).