Brass, W. (1975). Methods for estimating fertility and mortality from limted and defective data. University of North Carolina at Chapel Hill.
Lua i Stíl Chicago (17ú heag.)Brass, William. Methods for Estimating Fertility and Mortality from Limted and Defective Data. Chapel Hill, N.C: University of North Carolina at Chapel Hill, 1975.
Lua MLA (9ú heag.)Brass, William. Methods for Estimating Fertility and Mortality from Limted and Defective Data. University of North Carolina at Chapel Hill, 1975.
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