Berger, W. (2018). The book of beautiful questions: The powerful questions that will help you decide, create, connect, and lead. Bloomsbury Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Berger, Warren. The Book of Beautiful Questions: The Powerful Questions That Will Help You Decide, Create, Connect, and Lead. New York: Bloomsbury Publishing, 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Berger, Warren. The Book of Beautiful Questions: The Powerful Questions That Will Help You Decide, Create, Connect, and Lead. Bloomsbury Publishing, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.