Não informado. West Virginia Agriculture and Forestry. University of West Virginia, College of Agriculture and Forestry.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. West Virginia Agriculture and Forestry. Morgantown, Wa. Va: University of West Virginia, College of Agriculture and Forestry.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. West Virginia Agriculture and Forestry. University of West Virginia, College of Agriculture and Forestry.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.