Παραπομπή APA

Levitt, T. (1973). The third sector: New tactice for a responsive society. American management association.

Παραπομπή Chicago Style

Levitt, Theodore. The Third Sector: New Tactice for a Responsive Society. New York: American management association, 1973.

Παραπομπή MLA

Levitt, Theodore. The Third Sector: New Tactice for a Responsive Society. American management association, 1973.