Stapel, W. (1936). Was verstand Martin Luther unter Kirche?: Von Wilhelm Stapel. : Scheur.
Citazione stile Chigago Style (17a edizione)Stapel, Wilhelm. Was Verstand Martin Luther Unter Kirche?: Von Wilhelm Stapel. Bonn: : Scheur, 1936.
Citatione MLA (8a ed.)Stapel, Wilhelm. Was Verstand Martin Luther Unter Kirche?: Von Wilhelm Stapel. : Scheur, 1936.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.