Schultz, T. P. (1981). Economics of population. Addison-Wesley.
Cita Chicago (17th ed.)Schultz, T. Paul. Economics of Population. Reading, Mass: Addison-Wesley, 1981.
Cita MLA (9th ed.)Schultz, T. Paul. Economics of Population. Addison-Wesley, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.