Gaya APA

Alberigo, G, (. (). Christian unity: the Council of Ferrara-Florence, 1438/39 - 1989. . Leuven UP: 1991.

Gaya MLA

Alberigo, Giuseppe, (ed.). "Christian unity: the Council of Ferrara-Florence, 1438/39 - 1989. ". Leuven UP: 1991, . Buku.