Norton, G. W. (1993). Introduction to economics of agricultural development. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Norton, George W. Introduction to Economics of Agricultural Development. McGraw-Hill, 1993.
Lua MLA (8ú heag.)Norton, George W. Introduction to Economics of Agricultural Development. McGraw-Hill, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.