Siervo de los siervos de Dios (en latín: Servus servorum Dei)[1] es uno de los títulos papales y se usa al comienzo de las bulas papales.[2]
↑Gabriel Adeleye, Kofi Acquah-Dadzie, Thomas J. Sienkewicz, World dictionary of foreign expressions: a resource for readers (1999) "Servus servorum Dei", p. 361.
↑Ian Robinson The papal reform of the eleventh century p326 - 2004 "Gregory bishop, servant of the servants of God, to the archbishops, bishops , dukes, counts and the greater and lesser men in the kingdom of the Germans, greeting and apostolic blessing."