Citazione APA

Goodwin, J. . W., & Drummond, . H. E. (1982). Agricultural economics/2nd ed. Reston Publishing Company.

Stile di citazione Chicago

Goodwin, John W., e H. Evan Drummond. Agricultural Economics/2nd Ed. Virginia: Reston Publishing Company, 1982.

Citazione MLA

Goodwin, John W., e H. Evan Drummond. Agricultural Economics/2nd Ed. Reston Publishing Company, 1982.