As we privilege original sources, we quote numerous authors, and sometimes we reproduce entire books. In both cases, it is necessary to begin with an introduction page about the author, clarifying his bibliography and localizing the versions available on the Internet. The list of such pages is to be found at Category:Author. We also try to classify authors in Chronologies. The anonymous works are found at Category:Book.
Finally, the Category:Digitized book allows to find directly the books reproduced in Pl@ntUse.