Johnson, M. B., & Johnson, T. L. (1994). Study guide to accompany: Seitz, Nelson, Harcrow, Economics of resources, agriculture, and food. New York: McGraw-Hill.
Chicago Stili AlıntıJohnson, Marvin B., ve Tera L. Johnson. Study Guide to Accompany: Seitz, Nelson, Harcrow, Economics of Resources, Agriculture, and Food. New York: McGraw-Hill, 1994.
MLA AlıntıJohnson, Marvin B., ve Tera L. Johnson. Study Guide to Accompany: Seitz, Nelson, Harcrow, Economics of Resources, Agriculture, and Food. New York: McGraw-Hill, 1994.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..