Hagenbuch, W. (1958). Social economics. Norton.
Lua i Stíl Chicago (17ú heag.)Hagenbuch, Walter. Social Economics. New York: Norton, 1958.
Lua MLA (9ú heag.)Hagenbuch, Walter. Social Economics. Norton, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.