(1909). Extension circular. University of Arkansas, College of Agriculture and Experiment Station.
Chicagoスタイル(17版)引用形式Extension Circular. Fayetteville, Arkansas: University of Arkansas, College of Agriculture and Experiment Station, 1909.
MLA(8版)引用形式Extension Circular. University of Arkansas, College of Agriculture and Experiment Station, 1909.
警告: この引用は必ずしも正確ではありません.