Nef, Jorge
Ethics and technology : ethical choices in the age of pervasive technology
Wall & Thomson, 1989
 Buku Teks
Stewart, Rosemary
Choices for the manager
Prentice-Hall, 1982
 Buku Teks
United Nations Population Fund
Choices and responsibilities
UNFPA, 1994
 Buku Teks
Stewart, Rosemary
Choices for the manager
Prentice-Hall, 1982
 Buku Teks
Medical technology, health care and the consumer / edited, Allen D. Spiegel
Human Science Press, 1981
 Buku Teks