United Nations Conference on Human Environment, 1972
Buku Teks
Etzioni, Amitai, author
Prentice-Hall, 1976
Buku Teks
Miller, G. Tyler (George Tyler), 1931-, author
Thomson, Brooks/Cole, 2008
Buku Teks
Edmonds, Richard Louis, author
Routledge , 1994
Buku Teks
Carroll, R.W., author
Academic Press, 1976
Buku Teks