Alton, T. P. (1965). Polish national income and product in 1954, 1955, and 1956. Columbia University Press.
Lua i Stíl Chicago (17ú heag.)Alton, Thad Paul. Polish National Income and Product in 1954, 1955, and 1956. New York: Columbia University Press, 1965.
Lua MLA (8ú heag.)Alton, Thad Paul. Polish National Income and Product in 1954, 1955, and 1956. Columbia University Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.