Gaya APA

XVI, B. (2007). Encyclical letter 'Spe Salvi' to the bishops, priests and deacons, men and women religious and all the lay faithful on Christian hope. . Rome: Saint Peter..

Gaya MLA

XVI, Benedictus. "Encyclical letter 'Spe Salvi' to the bishops, priests and deacons, men and women religious and all the lay faithful on Christian hope.". Rome: Saint Peter., 2007. Buku.