Baer, J. (2013). Youtility: Why smart marketing is about help not hype. Portfolio/Penguin.
Style de citation Chicago (17e éd.)Baer, Jay. Youtility: Why Smart Marketing Is About Help Not Hype. New York, New York: Portfolio/Penguin, 2013.
Style de citation MLA (9e éd.)Baer, Jay. Youtility: Why Smart Marketing Is About Help Not Hype. Portfolio/Penguin, 2013.
Attention : ces citations peuvent ne pas être correctes à 100%.