APA

Guardini R., . (1965). The world and the person. Chicago: Regnery.

Chicago

Guardini Romano, . 1965. The world and the person. Chicago: Regnery.

Harvard

Guardini R., . (1965). The world and the person. Chicago: Regnery.

MLA

Guardini Romano, . The world and the person. Chicago: Regnery. 1965.