Asprey, D. (2016). Head strong: The bulletproof plan to activate untapped brain energy to work smarter and think faster-in just two weeks (First edition.). Harper Wave.
Cita Chicago Style (17a ed.)Asprey, Dave. Head Strong: The Bulletproof Plan to Activate Untapped Brain Energy to Work Smarter and Think Faster-in Just Two Weeks. First edition. New York, NY: Harper Wave, 2016.
Cita MLA (8a ed.)Asprey, Dave. Head Strong: The Bulletproof Plan to Activate Untapped Brain Energy to Work Smarter and Think Faster-in Just Two Weeks. First edition. Harper Wave, 2016.
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