Style de citation APA (7e éd.)

(1909). Extension circular. University of Arkansas, College of Agriculture and Experiment Station.

Style de citation Chicago (17e éd.)

Extension Circular. Fayetteville, Arkansas: University of Arkansas, College of Agriculture and Experiment Station, 1909.

Style de citation MLA (8e éd.)

Extension Circular. University of Arkansas, College of Agriculture and Experiment Station, 1909.