Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.