APA

Catholic Church, . (1942). Quadragesimo anno: encyclical letter on reconstructing the social order. Washington, D.C: National Catholic Welfare Conference.

Chicago

Catholic Church, . 1942. Quadragesimo anno: encyclical letter on reconstructing the social order. Washington, D.C: National Catholic Welfare Conference.

Harvard

Catholic Church, . (1942). Quadragesimo anno: encyclical letter on reconstructing the social order. Washington, D.C: National Catholic Welfare Conference.

MLA

Catholic Church, . Quadragesimo anno: encyclical letter on reconstructing the social order. Washington, D.C: National Catholic Welfare Conference. 1942.