Ayrmann, C. F. (1745). Christop. Frider. Ayrmanni Programma de sigillis ensiferis Landgrafviorum Hassiae veterum. Lammers.
Lua i Stíl Chicago (17ú heag.)Ayrmann, Christoph Friedrich. Christop. Frider. Ayrmanni Programma De Sigillis Ensiferis Landgrafviorum Hassiae Veterum. Giessae: Lammers, 1745.
Lua MLA (8ú heag.)Ayrmann, Christoph Friedrich. Christop. Frider. Ayrmanni Programma De Sigillis Ensiferis Landgrafviorum Hassiae Veterum. Lammers, 1745.
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