Heppner, P. P., & Heppner, M. J. (2004). Writing and publishing your thesis, dissertation, and research: A guide for students in the helping professions. Thomson/Brooks/Cole.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Heppner, P. Paul, و Mary J. Heppner. Writing and Publishing Your Thesis, Dissertation, and Research: A Guide for Students in the Helping Professions. Belmont, CA: Thomson/Brooks/Cole, 2004.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Heppner, P. Paul, و Mary J. Heppner. Writing and Publishing Your Thesis, Dissertation, and Research: A Guide for Students in the Helping Professions. Thomson/Brooks/Cole, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.