Sudbrink, L., & Whaley, J. (2015). Leading with GRIT: Inspiring action and accountability with generosity, respect, integrity, and truth. Wiley.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sudbrink, Laurie, و Jade Whaley. Leading with GRIT: Inspiring Action and Accountability with Generosity, Respect, Integrity, and Truth. Hoboken, New Jersey: Wiley, 2015.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Sudbrink, Laurie, و Jade Whaley. Leading with GRIT: Inspiring Action and Accountability with Generosity, Respect, Integrity, and Truth. Wiley, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.