Tracy, P. J. (2016). The sixth idea. G.P. Putnam's Sons.
Cita Chicago Style (17a ed.)Tracy, P. J. The Sixth Idea. New York: G.P. Putnam's Sons, 2016.
Cita MLA (8a ed.)Tracy, P. J. The Sixth Idea. G.P. Putnam's Sons, 2016.
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