Sarason, Seymour B.
Psychological problems in mental deficiency
Harper & Row , 1959
 Buku Teks SO
The treatment of medical problems in the elderly
edited by M.J. Denham
University Park Press, 1980
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Veeraraghavan, Vimala
Anxiety disorders : psychological assessment and treatment
Sage, 2002
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Miller, Robert D.
Problems in health care law
An Aspen Publication, 1996
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Gorline, Lynne Lesak
Common problems in prymary care
Mosby , 1982
 Buku Teks SO