Myrdak, G. (1957). Eco. theory and under developed regions. G. DUckworth.
Lua i Stíl Chicago (17ú heag.)Myrdak, Gunnar. Eco. Theory and Under Developed Regions. London: G. DUckworth, 1957.
Lua MLA (9ú heag.)Myrdak, Gunnar. Eco. Theory and Under Developed Regions. G. DUckworth, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.