Grant, W.D.
Blackie, 1981
Buku Teks
Madjelis Ilmu Pengetahuan Indonesia
Madjelis Ilmu Pengetahuan Indonesia, 1959
Buku Referensi
edited by John E. Hay
United Nations Environment Programme, 1995
Buku Teks
edited by John E. Hay, Wimala Ponniah and Mahesh Pradhan
United Nations Environment Programme , 1995
Buku Teks
UPM- UNESCO-UNEP International Environmental Education Programme , 1987
Buku Teks