Smith, J. R. (1929). Tree crops: A permanent agriculture. Harcourt, Brace.
Cita Chicago Style (17a ed.)Smith, J. Russell. Tree Crops: A Permanent Agriculture. New York: Harcourt, Brace, 1929.
Cita MLA (9a ed.)Smith, J. Russell. Tree Crops: A Permanent Agriculture. Harcourt, Brace, 1929.
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