Plunkett, W. R., & Attner, R. F. (1997). Management: Meeting and exceeding customer expectations (6th ed.). South-Western College Pub..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Plunkett, W. Richard, و Raymond F. Attner. Management: Meeting and Exceeding Customer Expectations. 6th ed. Cincinnati: South-Western College Pub., 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Plunkett, W. Richard, و Raymond F. Attner. Management: Meeting and Exceeding Customer Expectations. 6th ed. South-Western College Pub., 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.