Bauer und Kirche, 1939.

Visión cristiana de la política, 2002: p. 9 (Joseph Höffner) p. 132 (1906-1987; archbishop of Cologne)

Joseph Kardinal Höffner (1906-1987), 2009-2012: v. 2, p. 505 (d. October 16, 1987, in Cologne) jkt. flap (bishop of Münster, 1962-1969; archbishop of Cologne, 1969-1987)

German Wikipedia, viewed November 27, 2012 (Joseph Höffner; b. December 24, 1906 in Horhausen, Westerwald, Germany; d. October 16, 1987, in Cologne; named cardinal by Pope Paul VI on April 28, 1969; head of the Deutsche Bischofskonferenz from 1976 to 1987)

Víra?, 1979: leaf preceding main title page (Joseph Kardinal Höffner; ... Josefu kardinálu Höffnerovi)