Gifford, J. (2013). 100 more great leadership: From successful leaders to managers around the world. Marshall Cavendish.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gifford, Jonathan. 100 More Great Leadership: From Successful Leaders to Managers Around the World. Singapore: Marshall Cavendish, 2013.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Gifford, Jonathan. 100 More Great Leadership: From Successful Leaders to Managers Around the World. Marshall Cavendish, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.