Não informado. (1977). Journal of Comparative Economics. Academic Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Comparative Economics. San Diego, Calif: Academic Press, 1977.
Lua MLA (8ú heag.)Não informado. Journal of Comparative Economics. Academic Press, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.