Não informado. (1950). Agricultural and horticultural Engineering abstracts. National Institute of Agricultural Engineering.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Agricultural and Horticultural Engineering Abstracts. Silsoe, Inglaterra: National Institute of Agricultural Engineering, 1950.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Agricultural and Horticultural Engineering Abstracts. National Institute of Agricultural Engineering, 1950.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.