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শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUS Department of Agriculture. Agricultural Marketing. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1956.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিUS Department of Agriculture. Agricultural Marketing. U.S. Department of Agriculture, Agricultural Marketing Service, 1956.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.