APA-viite (7. p.)

Riga, P. (1966). John XXIII and the city of man. Newman Press.

Chicago-viite (17. p.)

Riga, Peter. John XXIII and the City of Man. Westminster, Md: Newman Press, 1966.

MLA-viite (9. p.)

Riga, Peter. John XXIII and the City of Man. Newman Press, 1966.