APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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