[https://www.google.de/books/edition/Gabriel_Riesser_s_Briefe_an_Salomon_Ludw/iRQJLdE8svsC?hl=de&gbpv=1&dq=gabriel+rie%C3%9Fer+f%C3%BCrth&pg=PA15&printsec=frontcover online verfügbar]</ref>. | [https://www.google.de/books/edition/Gabriel_Riesser_s_Briefe_an_Salomon_Ludw/iRQJLdE8svsC?hl=de&gbpv=1&dq=gabriel+rie%C3%9Fer+f%C3%BCrth&pg=PA15&printsec=frontcover online verfügbar]</ref>. |