Coale, A. (1971). The design of an experimental procedure for obtaining accurate vital statistics. International Program of Laboratories for Population Statistics, Carolina Population Center, University of North Carolina.
Chicago-viite (17. p.)Coale, Ansley. The Design of an Experimental Procedure for Obtaining Accurate Vital Statistics. Chapel Hill, N.C: International Program of Laboratories for Population Statistics, Carolina Population Center, University of North Carolina, 1971.
MLA-viite (9. p.)Coale, Ansley. The Design of an Experimental Procedure for Obtaining Accurate Vital Statistics. International Program of Laboratories for Population Statistics, Carolina Population Center, University of North Carolina, 1971.
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