(1909). Extension circular. University of Arkansas, College of Agriculture and Experiment Station.
Chicago Style aipamenaExtension Circular. Fayetteville, Arkansas: University of Arkansas, College of Agriculture and Experiment Station, 1909.
MLA aipamenaExtension Circular. University of Arkansas, College of Agriculture and Experiment Station, 1909.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.