Markel, N. N. (2009). The five vital signs of conversation: Address, self-disclosure, seating, eye-contact, and touch. Peter Lang.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Markel, Norman N. The Five Vital Signs of Conversation: Address, Self-disclosure, Seating, Eye-contact, and Touch. New York: Peter Lang, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Markel, Norman N. The Five Vital Signs of Conversation: Address, Self-disclosure, Seating, Eye-contact, and Touch. Peter Lang, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.