KEEN, P. G. (1991). Every Managers Guide To Information Technology A Glossary Of Key Terms And Concepts For Todays Business Leader Petter G.w Keen. Harvard Business School.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)KEEN, Petter G.W. Every Managers Guide To Information Technology A Glossary Of Key Terms And Concepts For Todays Business Leader Petter G.w Keen. Harvard Business School, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)KEEN, Petter G.W. Every Managers Guide To Information Technology A Glossary Of Key Terms And Concepts For Todays Business Leader Petter G.w Keen. Harvard Business School, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.