Rubin, G. (2017). The four tendencies: The indispensable personality profiles that reveal how to make your life better (and other people's lives better, too) (Unabridged.). Random House Audio.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rubin, Gretchen. The Four Tendencies: The Indispensable Personality Profiles That Reveal How to Make Your Life Better (and Other People's Lives Better, Too). Unabridged. New York: Random House Audio, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Rubin, Gretchen. The Four Tendencies: The Indispensable Personality Profiles That Reveal How to Make Your Life Better (and Other People's Lives Better, Too). Unabridged. Random House Audio, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.