Upham, A. A. (1910). An introduction to agriculture. D. Appleton and Company.
Lua i Stíl Chicago (17ú heag.)Upham, Arthur A. An Introduction to Agriculture. New York: D. Appleton and Company, 1910.
Lua MLA (8ú heag.)Upham, Arthur A. An Introduction to Agriculture. D. Appleton and Company, 1910.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.