APA
National Research Council G. S. (. o., National Research Council G. S. (. o., . (1972). Earth and human affairs. New York: Canfield Press U S A.
Chicago
National Research Council Geological Sciences (Committee on-), National Research Council Geological Sciences (Committee on-), . 1972. Earth and human affairs. New York: Canfield Press U S A.
Harvard
National Research Council G. S. (. o., National Research Council G. S. (. o., . (1972). Earth and human affairs. New York: Canfield Press U S A.
MLA
National Research Council Geological Sciences (Committee on-), National Research Council Geological Sciences (Committee on-), . Earth and human affairs. New York: Canfield Press U S A. 1972.
