SPECHLER, M. (1990). Perspectives Economic Thought. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)SPECHLER, Martin. Perspectives Economic Thought. McGraw-Hill, 1990.
Lua MLA (8ú heag.)SPECHLER, Martin. Perspectives Economic Thought. McGraw-Hill, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.