Gaya APA

Umoh, C, E. (1995). Authentic human development from 'Quadragesimo Anno' to 'Centesimus Annus': A theological-ethical analysis. . Roma: Roma PUL Academia Alfonsiana.

Gaya MLA

Umoh, Christopher, E.. "Authentic human development from 'Quadragesimo Anno' to 'Centesimus Annus': A theological-ethical analysis. ". Roma: Roma PUL Academia Alfonsiana, 1995. Buku.