Kasper, Walter, 1933- (Autor Personal)

Die Lehre von der Tradition in der römischen Schule, 1962.

Kürschners Deutscher Gelehrten-Kalender, 1987 (Dr. theol., Prof. Walter Kasper)

Jesus Christus, das Heil der Welt, 2016: title page (Walter Kasper)

Press Office of the Holy See website, viewed August 15, 2017: link to Documentation page (under College of Cardinals: Cardinal Walter Kasper, President emeritus of the Pontifical Council for Promoting Christian Unity; born 5 March 1933, in Heidenheim/Brenz, Germany; ordained to the priesthood on 6 April 1957; appointed Bishop of Rottenburg-Stuttgart on 17 April 1989; created cardinal by Pope John Paul II on 21 February 2001) http://press.vatican.va/content/salastampa/en/documentation/cardinali_biografie/cardinali_bio_kasper_w.html

UIA, 9 septiembre 2005: catálogo electrónico (Kasper, Walter, 1933- )

Diccionario enciclopédico de los Papas y del Papado, 2003: t.p. (Walter Kasper)

b. 1933