APA
Guardini R., . (1966). Prayers from theology. New York: Herder and Herder.
Chicago
Guardini Romano, . 1966. Prayers from theology. New York: Herder and Herder.
Harvard
Guardini R., . (1966). Prayers from theology. New York: Herder and Herder.
MLA
Guardini Romano, . Prayers from theology. New York: Herder and Herder. 1966.
