Cita APA (7a ed.)

Newman, J. H., & O'Connell, D. M. (1938). Heart to heart: A Cardinal Newman prayerbook. America Press.

Cita Chicago Style (17a ed.)

Newman, John Henry, y Daniel Michael O'Connell. Heart to Heart: A Cardinal Newman Prayerbook. New York: America Press, 1938.

Cita MLA (8a ed.)

Newman, John Henry, y Daniel Michael O'Connell. Heart to Heart: A Cardinal Newman Prayerbook. America Press, 1938.