Harper, S. C. (2001). The forward-focused organization: Visionary thinking and breakthrough leadership to create your company's future. AMACOM.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Harper, Stephen C. The Forward-focused Organization: Visionary Thinking and Breakthrough Leadership to Create Your Company's Future. New York: AMACOM, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Harper, Stephen C. The Forward-focused Organization: Visionary Thinking and Breakthrough Leadership to Create Your Company's Future. AMACOM, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.