Herber, Lewis
Our synthetic environment / Lewis Herber
Alfred A. Knopf, 1962
 Buku Teks SO
Kaufman, Donald G.
Biosphere 2000 : protecting our global environment
Kendall/Hunt, 1996
 Buku Teks
Garte, Seymour
Where we stand: a surprising look at the real state of our planet
American Management Association, 2008
 eBooks
Southwick, Charles H.
Ecology and the quality of our environment
D. Van Nostrand, 1976
 Buku Teks SO
Southwick, Charles H.
Ecology and the quality of our environment
D. Van Nostrand, 1972
 Buku Teks SO