Παραπομπή APA

Forster, G., & Leager, M. C. Elements of agricultural economic. Prentice hall INC.

Παραπομπή Chicago Style

Forster, G.W, και Marc C. Leager. Elements of Agricultural Economic. New York: Prentice hall INC.

Παραπομπή MLA

Forster, G.W, και Marc C. Leager. Elements of Agricultural Economic. Prentice hall INC.