APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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