Vera V. e Gregory S. Girolami (1998): PDFArquivado 12 de xuño de 2010 en Wayback Machine. School of Chemical Sciences Web Genealogy "Genealogy Database Entry: Gmelin, Johann Friedrich". University of Illinois, Champaign-Urbana. Consultada o 12/07/2013.
web.archive.org
Vera V. e Gregory S. Girolami (1998): PDFArquivado 12 de xuño de 2010 en Wayback Machine. School of Chemical Sciences Web Genealogy "Genealogy Database Entry: Gmelin, Johann Friedrich". University of Illinois, Champaign-Urbana. Consultada o 12/07/2013.