Não informado. (2001). Annual Report of the Massachusetts Extension Service. Massachusetts Extension Service.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Annual Report of the Massachusetts Extension Service. Amherst, Mass: Massachusetts Extension Service, 2001.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Annual Report of the Massachusetts Extension Service. Massachusetts Extension Service, 2001.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.