Lua APA (7ú heag.)

Não informado. Science serves your farm and home. West Virginia Agricultural Experiment Station.

Lua i Stíl Chicago (17ú heag.)

Não informado. Science Serves Your Farm and Home. Morgantown, Wa. Va: West Virginia Agricultural Experiment Station.

Lua MLA (8ú heag.)

Não informado. Science Serves Your Farm and Home. West Virginia Agricultural Experiment Station.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.