Geer, J. G. (1996). From tea leaves to opinion polls: A theory of democratic leadership. Columbia University Press.
Lua i Stíl Chicago (17ú heag.)Geer, John Gray. From Tea Leaves to Opinion Polls: A Theory of Democratic Leadership. New York: Columbia University Press, 1996.
Lua MLA (9ú heag.)Geer, John Gray. From Tea Leaves to Opinion Polls: A Theory of Democratic Leadership. Columbia University Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.