APA (7th ed.) Zitazioa

Carlson, L. M. (2005). William J. Spillman and the birth of agricultural economics. University of Missouri Press.

Chicago Style (17th ed.) Zitazioa

Carlson, Laurie M. William J. Spillman and the Birth of Agricultural Economics. Columbia: University of Missouri Press, 2005.

MLA (9th ed.) Zitazioa

Carlson, Laurie M. William J. Spillman and the Birth of Agricultural Economics. University of Missouri Press, 2005.