Forster, G. W., & Leager, M. C. (1950). Elements of agricultural economics. Prentice-Hall.
Citazione stile Chigago Style (17a edizione)Forster, Garnet Wolsey, e Marc Carl Leager. Elements of Agricultural Economics. New York: Prentice-Hall, 1950.
Citatione MLA (9a ed.)Forster, Garnet Wolsey, e Marc Carl Leager. Elements of Agricultural Economics. Prentice-Hall, 1950.