DM: Teilhard de Chardin, Pierre. The Divine Milieu: An Essay on the Interior Life. First edition. New York: Harper & Brothers, 1960.
FE: Warner, Keith. “Franciscan Environmental Ethics: Imagining Creation as a Community of Care.” Journal of the Society of Christian Ethics 31, no. 1 (2011): 143-160.
HP: Teilhard de Chardin, Pierre. The Human Phenomenon. Brighton; Chicago: Sussex Academic Press, 2015.
HR: White, Lynn, Jr. “The Historical Roots of Our Ecological Crisis.” Science 155, no. 3767 (Mar. 10, 1967): 1203-7.
PG: O’Connor, Flannery, Leo Zuber, and Carter W Martin. The Presence of Grace, and Other Book Reviews. Athens: University of Georgia Press, 1983.
PTC: Pierre Teilhard de Chardin: Writings Selected with an Introduction by Ursula King. Modern Spiritual Masters Series. Maryknoll, NY: Orbis Books, 1999.
TB: Thomas Berry: Selected Writings on the Earth Community. Selected with an Introduction by Mary Evelyn Tucker and John Grim. Modern Spiritual Masters Series. Maryknoll, NY: Orbis Books, 2014.
TO: Powers, Richard. The Overstory. New York: W.W. Norton, 2018.