Παραπομπή APA

UNESCO. (1974). Social indicators: Problemsof definition and of selection. Unesco.

Παραπομπή Chicago Style

UNESCO. Social Indicators: Problemsof Definition and of Selection. Paries: Unesco, 1974.

Παραπομπή MLA

UNESCO. Social Indicators: Problemsof Definition and of Selection. Unesco, 1974.