APA
Clepper Henry Ed, Sponsored by the Natural Resources Council of America & Sponsored by the Natural Resources Council of America. (1971). Leaders of American conservation. New York: Ronald Press Co. U S A.
Chicago
Clepper Henry Ed, Sponsored by the Natural Resources Council of America and Sponsored by the Natural Resources Council of America. 1971. Leaders of American conservation. New York: Ronald Press Co. U S A.
Harvard
Clepper Henry Ed, Sponsored by the Natural Resources Council of America and Sponsored by the Natural Resources Council of America. (1971). Leaders of American conservation. New York: Ronald Press Co. U S A.
MLA
Clepper Henry Ed, Sponsored by the Natural Resources Council of America and Sponsored by the Natural Resources Council of America. Leaders of American conservation. New York: Ronald Press Co. U S A. 1971.
