Guardini, Romano, 1885-1968 (Autor Personal)

His Conscience, 1932.

Brückenbauer zwischen Kirche u. Gesellschaft, 1999: t.p. (R. Guardini)

Romano Guardini, 2018: p. 20 (b. Feb. 17, 1885 in Verona, Italy)

Power and responsibility : a course of action for the new age, 1961, c1961: t.p. (Romano Guardini, autor)