1. The Quota Method of Apportionment
2. Bixby, Lenore E. “Statistical Data Requirements in Legislation,”. Prepared for Committee on National Statistics, Assembly of Behavioral and Social Sciences, National Research Council. Washington, D.C.: National Academy of Sciences.
3. Gonzalez, Maria Elena and Waksberg, Joseph. “Estimation of the Error of Synthetic Estimates,”. Prepared for presentation at the first meeting of the International Association of Survey Statisticians. Vienna, Austria. Washington, D.C.: U.S. Bureau of the Census, Census Vertical File, Staff Papers.