Hennessy, M. E. (1924). Calvin Coolidge: From a Green mountain farm to the White House. G.P. Putnam's sons.
Lua i Stíl Chicago (17ú heag.)Hennessy, Michael Edmund. Calvin Coolidge: From a Green Mountain Farm to the White House. New York & London: G.P. Putnam's sons, 1924.
Lua MLA (9ú heag.)Hennessy, Michael Edmund. Calvin Coolidge: From a Green Mountain Farm to the White House. G.P. Putnam's sons, 1924.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.