Não informado. (1887). Bulletin of the Nebraska Agricultural Experiment Station. University of Nebraska, College of Agriculture.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Bulletin of the Nebraska Agricultural Experiment Station. Lincoln, Neb: University of Nebraska, College of Agriculture, 1887.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Bulletin of the Nebraska Agricultural Experiment Station. University of Nebraska, College of Agriculture, 1887.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.