John Paul II, P. (1981). Toward a philosophy of praxis: An anthology. Crossroad.
Lua i Stíl Chicago (17ú heag.)John Paul II, Pope. Toward a Philosophy of Praxis: An Anthology. New York: Crossroad, 1981.
Lua MLA (8ú heag.)John Paul II, Pope. Toward a Philosophy of Praxis: An Anthology. Crossroad, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.