Seligman, E. R. A. (1902). The economic interpretation of history. Columbia University Press.
Lua i Stíl Chicago (17ú heag.)Seligman, Edwin Robert Anderson. The Economic Interpretation of History. New York: Columbia University Press, 1902.
Lua MLA (9ú heag.)Seligman, Edwin Robert Anderson. The Economic Interpretation of History. Columbia University Press, 1902.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.