Dublin, L. I., & Lotka, A. J. (1937). Twenty-five years of health progress: A study of the mortality experience among the industrial policyholders of the Metropolitan life insurance company 1911 to 1935. Metropolitan Life Insurance.
Cita Chicago (17th ed.)Dublin, Louis Israel, i Alfred James Lotka. Twenty-five Years of Health Progress: A Study of the Mortality Experience Among the Industrial Policyholders of the Metropolitan Life Insurance Company 1911 to 1935. New York: Metropolitan Life Insurance, 1937.
Cita MLA (9th ed.)Dublin, Louis Israel, i Alfred James Lotka. Twenty-five Years of Health Progress: A Study of the Mortality Experience Among the Industrial Policyholders of the Metropolitan Life Insurance Company 1911 to 1935. Metropolitan Life Insurance, 1937.