McDougall, C. (2015). Natural born heroes: Mastering the lost secrets of strength and endurance.
Cita Chicago Style (17a ed.)McDougall, Christopher. Natural Born Heroes: Mastering the Lost Secrets of Strength and Endurance. 2015.
Cita MLA (8a ed.)McDougall, Christopher. Natural Born Heroes: Mastering the Lost Secrets of Strength and Endurance. 2015.
Precaución: Estas citas no son 100% exactas.