1. The Methods and Materials of Demography;Shyrock,1976
2. “US population: Where we are; where we're going” in Population Bulletin 37 (1982) a publication of the Reference Bureau, Inc, Washington, DC.
3. “US population: Where we are; where we're going” in Population Bulletin 37 (1982) a publication of the Reference Bureau, Inc, Washington, DC.
4. Shyrock et al, The Methods and Materials of Demography.
5. “US Population: Where we are.”