Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.