APA-referens (7:e uppl.)
Schultz, T. W. (1971). Investment in human capital: The role of education and of research.
Chicago-referens (17:e uppl.)
Schultz, Theodore W. Investment in Human Capital: The Role of Education and of Research. 1971.
MLA-referens (9:e uppl.)
Schultz, Theodore W. Investment in Human Capital: The Role of Education and of Research. 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.