Cita APA (7a ed.)

Elliot, L., & John, R. (1977). I will be called John: The story of Pope John XXIII. Collins.

Cita Chicago Style (17a ed.)

Elliot, Lawrence, y Roland John. I Will Be Called John: The Story of Pope John XXIII. London: Collins, 1977.

Cita MLA (9a ed.)

Elliot, Lawrence, y Roland John. I Will Be Called John: The Story of Pope John XXIII. Collins, 1977.