Cita APA (7a ed.)

Iglesia Católica, Juan XXIII, P., & Gibbons, W. J. (1962). Mater et magistra: Encyclical letter of his holiness Pope John XXIII, Christianity and social progress (Study club ed.). Paulist Press.

Cita Chicago Style (17a ed.)

Iglesia Católica, Papa Juan XXIII, y William Joseph Gibbons. Mater Et Magistra: Encyclical Letter of His Holiness Pope John XXIII, Christianity and Social Progress. Study club ed. Glen Rock, NJ: Paulist Press, 1962.

Cita MLA (9a ed.)

Iglesia Católica, et al. Mater Et Magistra: Encyclical Letter of His Holiness Pope John XXIII, Christianity and Social Progress. Study club ed. Paulist Press, 1962.