Παραπομπή APA

Cramer,Gail L, & Jensen,Clarence W. (1979). Agricultural economics and agribusiness. John Wiley & Sons.

Παραπομπή Chicago Style

Cramer,Gail L, και Jensen,Clarence W. Agricultural Economics and Agribusiness. New York: John Wiley & Sons, 1979.

Παραπομπή MLA

Cramer,Gail L, και Jensen,Clarence W. Agricultural Economics and Agribusiness. John Wiley & Sons, 1979.