The Tactics, Routines, and Habits of Billionaires, Icons, and World-Class Performers. Mariner Books, 2016.
Notes on Startups, or How to Build the Future. Currency, 2014.
Alan Turing and the Invention of the Computer. Atlas Books, 2006.
Little Things that Can Change Your Life… and Maybe the World. Grand Central Publishing, 2017.
The Dark Story of America’s Shining Women. Sourcebooks, 2017.
How Great Leaders Inspire Everyone to Take Action. Portfolio/Penguin, 2009.
The Stories of Black Women Who Fought to Become Physicians, from the Civil War to the 21st Century. Beacon Press, 2023.
How the First Women Doctors Changed the World of Medicine. Park Row Books, 2021.
Logic in Writing and Thinking. 3rd ed., Pearson, 2020.
The Brief Life and Towering Exploits of History’s Greatest Conqueror as Told by His Original Biographers. Penguin Books, 2004.
The Four Types of Human Behavior and How to Effectively Communicate with Each in Business (and in Life). St. Martin’s Essentials, 2019.
A Global History of the Olympics. W.W. Norton & Company, 2016.