<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Treude, Linda und Sascha Freyberg.</hi> 2012. <emph xmlns="http://www.tei-c.org/ns/1.0">"</emph>Diagrammatik und Wissensorganisation. <emph xmlns="http://www.tei-c.org/ns/1.0">"</emph> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">LIBREAS. Library Ideas </hi>21.