Yale University. School of Forestry & Helfrich, H. W. (1970). The Environmental crisis: Mans struggle to live with himself. Yale University Press.
Chicago Style (17th ed.) CitationYale University. School of Forestry and Harold W. Helfrich. The Environmental Crisis: Mans Struggle to Live with Himself. New Haven: Yale University Press, 1970.
MLA (9th ed.) CitationYale University. School of Forestry and Harold W. Helfrich. The Environmental Crisis: Mans Struggle to Live with Himself. Yale University Press, 1970.
Warning: These citations may not always be 100% accurate.