Hē ktisē hōs eucharistia, 1992 t.p. (Mētropolitou Pergamou Iōannou D. Zēzioula, kathēgētou panepistēmiou) p. 15 (pref. signed: ho P.I.)
L'Église et ses institutions, 2011 t.p. (Métropolite Jean (Zizioulas) de Pergame)
L'eucharistie, 1970.
Wikipedia, Jan. 29, 2013 (John Zizioulas; born 10 January 1931, Kozani; Eastern Orthodox metropolitan of Pergamon. He is the Chairman of the Academy of Athens and a noted theologian) http://en.wikipedia.org/wiki/John_Zizioulas