Belloc, H. (1924). Economics for Helen ([1st ed., 1st issue.].). J.W. Arrowsmith.
Lua i Stíl Chicago (17ú heag.)Belloc, Hilaire. Economics for Helen. [1st ed., 1st issue.]. London: J.W. Arrowsmith, 1924.
Lua MLA (8ú heag.)Belloc, Hilaire. Economics for Helen. [1st ed., 1st issue.]. J.W. Arrowsmith, 1924.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.