Παραπομπή APA

Lebergott, S. (1964). Manpower in economic growth: American record since 1800. McGraw Hill.

Παραπομπή Chicago Style

Lebergott, Stanley. Manpower in Economic Growth: American Record Since 1800. New York: McGraw Hill, 1964.

Παραπομπή MLA

Lebergott, Stanley. Manpower in Economic Growth: American Record Since 1800. McGraw Hill, 1964.