Dolphin, Warren D., author
McGraw-HIll, 2002
Buku Teks
Dolphin, Warren D., author
McGraw-Hill, Higher Education, 2008
Buku Teks
Katrina Brown ... [et al.]
The Global Environment Facility, 1993
Buku Teks
Kantor Menteri Negara Kependudukan dan Lingkungan Hidup, 1992
Buku Referensi
edited by Michael Bowman and Catherine Redgwell
Kluwer Law International, 1996
Buku Teks