Eschweiler, F. G. (1824). Systema lichenum: Genera exhibens rite distincta, pluribus novis adaucta. J. L. Schrag.
Chicago Style (17th ed.) CitationEschweiler, Franz Gerhard. Systema Lichenum: Genera Exhibens Rite Distincta, Pluribus Novis Adaucta. Norimbergae: J. L. Schrag, 1824.
MLA (9th ed.) CitationEschweiler, Franz Gerhard. Systema Lichenum: Genera Exhibens Rite Distincta, Pluribus Novis Adaucta. J. L. Schrag, 1824.
Warning: These citations may not always be 100% accurate.