Smith, J. R. (1929). Tree crops: A permanent agriculture. Harcourt, Brace.
Chicagoスタイル(17版)引用形式Smith, J. Russell. Tree Crops: A Permanent Agriculture. New York: Harcourt, Brace, 1929.
MLA(9版)引用形式Smith, J. Russell. Tree Crops: A Permanent Agriculture. Harcourt, Brace, 1929.
警告: この引用は必ずしも正確ではありません.