Riahi-Belkaoui, Ahmed, 1943-, author
Addison-Wesley, 1980
Buku Teks
Black, Oliver, 1957-, author
Cambridge University Press, 2005
Buku Teks
UNAIDS, 2002
Buku Teks
Leddy, Susan, author
J.B. Lippincott, 1993
Buku Teks
Kirkpatrick, Larry D., author
Brooks/Cole Cengage Learning, 2010
Buku Teks