Essentials of Business Research Methods, Hair F. Joseph, & Babian Barry. (2003). Essentials of Business Research Methods. John Wiley & Sons.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Essentials of Business Research Methods, Hair F. Joseph, و Babian Barry. Essentials of Business Research Methods. United State of America: John Wiley & Sons, 2003.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Essentials of Business Research Methods, et al. Essentials of Business Research Methods. John Wiley & Sons, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.