Kelly, Gary F.
Sexuality today: the human perspective / Gary F. Kelly;
The Dushkin Publishing Group, 1992
 Buku Teks
Block, Marilyn R.
Identifying environmental aspects and impacts / Marilyn R. Block
American Society for Quality, 1999
 Buku Teks
Cohn, Steven Mark
Too cheap to meter : an economic and philosophical analysis of the nuclear dream / Steven Mark Cohn
State University of New York Press , 1997
 Buku Teks
White, Rodney R.
Urban environmental management: environmental change and urban design / Rodney R. White
John Wiley & Sons, 1994
 Buku Teks
Kuhre, W. Lee, 1947-
ISO 14001 certification : environmental management systems : a practical guide for preparing effective environmental management systems
Prentice-Hall, 1995
 Buku Teks