APA aipamena

Hopkins, J. A. (1973). Changing technology and employment in agriculture. New York: Da Capo Press.

Chicago Style aipamena

Hopkins, John A. Changing Technology and Employment in Agriculture. New York: Da Capo Press, 1973.

MLA aipamena

Hopkins, John A. Changing Technology and Employment in Agriculture. New York: Da Capo Press, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.