Não informado. (1954). Proceedings of the Business and Economic Statistics Section. American Statistical Association.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Proceedings of the Business and Economic Statistics Section. Washington: American Statistical Association, 1954.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Proceedings of the Business and Economic Statistics Section. American Statistical Association, 1954.
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