Owen, W. F., & Ruby, D. A. (1989). Guide to graduate study in economics, agricultural economics, public administration, and doctoral programs in business administration in the United States and Canada (8th ed.). The Economics Institute.
Čikaški stil citiranja (17. izdanje)Owen, Wyn F., i Douglas A. Ruby. Guide to Graduate Study in Economics, Agricultural Economics, Public Administration, and Doctoral Programs in Business Administration in the United States and Canada. 8th ed. Boulder: The Economics Institute, 1989.
MLA način citiranja (9. izdanje)Owen, Wyn F., i Douglas A. Ruby. Guide to Graduate Study in Economics, Agricultural Economics, Public Administration, and Doctoral Programs in Business Administration in the United States and Canada. 8th ed. The Economics Institute, 1989.