Tillett, P. (1965). The political vocation. Basic Books.
Lua i Stíl Chicago (17ú heag.)Tillett, Paul. The Political Vocation. New York: Basic Books, 1965.
Lua MLA (9ú heag.)Tillett, Paul. The Political Vocation. Basic Books, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.