Herring, E. P. 1. (2006). Presidential leadership: The political relations of Congress and the chief executive. Transaction Publishers.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিHerring, Edward Pendleton 1903. Presidential Leadership: The Political Relations of Congress and the Chief Executive. New Brunswick, N.J: Transaction Publishers, 2006.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিHerring, Edward Pendleton 1903. Presidential Leadership: The Political Relations of Congress and the Chief Executive. Transaction Publishers, 2006.
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