APA

International Action for Cooperative Development, . (1963). Principales of social doctrine. Louvain: s.n.

Chicago

International Action for Cooperative Development, . 1963. Principales of social doctrine. Louvain: s.n.

Harvard

International Action for Cooperative Development, . (1963). Principales of social doctrine. Louvain: s.n.

MLA

International Action for Cooperative Development, . Principales of social doctrine. Louvain: s.n. 1963.