Não informado. (1931). Credit and financial management. National Association of Credit Management.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Credit and Financial Management. New York: National Association of Credit Management, 1931.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Credit and Financial Management. National Association of Credit Management, 1931.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.