Pietersen, W. (2010). Strategic learning: How to become smarter than your competition and turn key insights into competitive advantage. Wiley.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pietersen, Willie. Strategic Learning: How to Become Smarter than Your Competition and Turn Key Insights into Competitive Advantage. Hoboken, N.J.: Wiley, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Pietersen, Willie. Strategic Learning: How to Become Smarter than Your Competition and Turn Key Insights into Competitive Advantage. Wiley, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.