Gäbler, U. “Philip Schaff, The Creeds of Christendom With A History and Critical Notes, In Three Volumes, Sixth Edition, Grand Rapids, Michigan 1977; Nachdruck Der Ausgabe Von 1931 (Bibliotheca Symbolica Ecclesiae Universalis)”. Zwingliana, vol. 15, no. 2, Jan. 2010, pp. 170-1, https://zwingliana.ch/index.php/zwa/article/view/870.