المؤلفون: Castiglione Henrik, Magyary-Torma István, Dr. Rolf Möller, Somkuti István, Karbán József, Brückner János, Lajta Andor, szerkesztő
الوصول الحر: https://www.europeana.eu/item/2048128/7375?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest
المؤلفون: Möller, Johannes
الوصول الحر: https://www.europeana.eu/item/2048128/615469?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest