Phillips, E., & Pugh, D. S. (2000). How to get a PhD: A handbook for students and their supervisors (3rd ed., rev. and updated.). Open University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Phillips, Estelle, و Derek Salman Pugh. How to Get a PhD: A Handbook for Students and Their Supervisors. 3rd ed., rev. and updated. Buckingham [England]: Open University Press, 2000.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Phillips, Estelle, و Derek Salman Pugh. How to Get a PhD: A Handbook for Students and Their Supervisors. 3rd ed., rev. and updated. Open University Press, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.