Não informado. (1959). Canadian agricultural engineering. Canadian Society of Agricultural Engineering.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Canadian Agricultural Engineering. Ottawa: Canadian Society of Agricultural Engineering, 1959.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Canadian Agricultural Engineering. Canadian Society of Agricultural Engineering, 1959.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.