Hopkins, J. A. (1973). Changing technology and employment in agriculture. New York: Da Capo Press.
Chicago Style CitationHopkins, John A. Changing Technology and Employment in Agriculture. New York: Da Capo Press, 1973.
Cita MLAHopkins, John A. Changing Technology and Employment in Agriculture. New York: Da Capo Press, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.