Buckley, J., Jr., & Doolittle, S. (2021). It's a numbers game!: The math behind the perfect pitch, the game-winning grand slam, and so much more! National Geographic.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Buckley, James, Jr., و Sean Doolittle. It's a Numbers Game!: The Math Behind the Perfect Pitch, the Game-winning Grand Slam, and so Much More! Washington, D.C.: National Geographic, 2021.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Buckley, James, Jr., و Sean Doolittle. It's a Numbers Game!: The Math Behind the Perfect Pitch, the Game-winning Grand Slam, and so Much More! National Geographic, 2021.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.