Attenborough, David;
The Living Planet
, Little Brown, 1985.
Daugs, Dr. Donald and Dr. C. Earl Israelsen,
Water Education Grades
K-6
: Logan, UTL Utah State University, 1985.
Lovelock, James;
The Ages of Gaia
, W.W. Norton and Co., 1988.
Odum, Eugene;
Fundamentals of Ecology
, Saunders College Publishing, 1971.
Suplee, Curt;
Planet in a Bottle
: “The Making of Biosphere 2”; in the Washington Post, January 21, 1990.