Ebert, R. R. (2013). Champion of the Lark: Harold Churchill and the presidency of Studebaker-Packard, 1956-1961. McFarland & Co., Inc., Publishers.
Lua i Stíl Chicago (17ú heag.)Ebert, Robert R. Champion of the Lark: Harold Churchill and the Presidency of Studebaker-Packard, 1956-1961. Jefferson, N.C.: McFarland & Co., Inc., Publishers, 2013.
Lua MLA (9ú heag.)Ebert, Robert R. Champion of the Lark: Harold Churchill and the Presidency of Studebaker-Packard, 1956-1961. McFarland & Co., Inc., Publishers, 2013.
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