(1915). Yearbook of the United States Department of Agriculture 1915. Government Printing.
Lua i Stíl Chicago (17ú heag.)Yearbook of the United States Department of Agriculture 1915. Washington: Government Printing, 1915.
Lua MLA (9ú heag.)Yearbook of the United States Department of Agriculture 1915. Government Printing, 1915.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.