Reng, A. (1956). Schmiedekreuze in Sankt Peter: Von August Reng. Ludwigs-Oberrealschule Humanist. Gymnasium Straubing.
Citazione stile Chigago Style (17a edizione)Reng, August. Schmiedekreuze in Sankt Peter: Von August Reng. Straubing: Ludwigs-Oberrealschule Humanist. Gymnasium Straubing, 1956.
Citatione MLA (8a ed.)Reng, August. Schmiedekreuze in Sankt Peter: Von August Reng. Ludwigs-Oberrealschule Humanist. Gymnasium Straubing, 1956.
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