Richardson, E. (1979). Periodontal diseases in children and adolescents: State of the art ; proceedings of a symposium presented as a part of the Dedication of the New Dental Facility Meharry Medical College on May 21-23, 1979 in Nashville, Tennessee. s.n.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Richardson, Elisha. Periodontal Diseases in Children and Adolescents: State of the Art ; Proceedings of a Symposium Presented as a Part of the Dedication of the New Dental Facility Meharry Medical College on May 21-23, 1979 in Nashville, Tennessee. Nashville, TN: s.n, 1979.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Richardson, Elisha. Periodontal Diseases in Children and Adolescents: State of the Art ; Proceedings of a Symposium Presented as a Part of the Dedication of the New Dental Facility Meharry Medical College on May 21-23, 1979 in Nashville, Tennessee. s.n, 1979.