Riley, H. (1970). Food marketing in the economic development of Puerto Rico. Latin American Studies Center, Michigan State University.
Lua i Stíl Chicago (17ú heag.)Riley, Harold. Food Marketing in the Economic Development of Puerto Rico. East Lansing, Mich.: Latin American Studies Center, Michigan State University, 1970.
Lua MLA (8ú heag.)Riley, Harold. Food Marketing in the Economic Development of Puerto Rico. Latin American Studies Center, Michigan State University, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.