Παραπομπή APA

Schultz, T. W. (1981). Investing in people: The economics of population quality. Berkeley: University of California.

Παραπομπή Chicago Style

Schultz, Theodore W. Investing in People: The Economics of Population Quality. Berkeley: University of California, 1981.

Παραπομπή MLA

Schultz, Theodore W. Investing in People: The Economics of Population Quality. Berkeley: University of California, 1981.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.