Drucker, P. F. (1989). The new realities: In government and politics-- , in economy and business-- , in society-- , and in world view. Heinemann Professional Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Drucker, Peter F. The New Realities: In Government and Politics-- , in Economy and Business-- , in Society-- , and in World View. Oxford: Heinemann Professional Publishing, 1989.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Drucker, Peter F. The New Realities: In Government and Politics-- , in Economy and Business-- , in Society-- , and in World View. Heinemann Professional Publishing, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.