Não informado. (1953). Social and economics studies. University of West Indies, Institute of Social and Economic Research.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Social and Economics Studies. Kingston: University of West Indies, Institute of Social and Economic Research, 1953.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Social and Economics Studies. University of West Indies, Institute of Social and Economic Research, 1953.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.