• 

  The Sexual Curriculum: Coitality, Koitomimesis and Coitarche

  https://web.archive.org/web/20130419020014/http://www2.hu-berlin.de/sexology/GESUND/ARCHIV/GUS/GUSVOLIICH6.HTM

  Keine Beschreibung vorhanden.

• 

  Poverty Point: The First Complex Delta Culture

  https://web.archive.org/web/20131207234411/http://www.deltablues.net/jon.html

  Keine Beschreibung vorhanden.

• 

  Poverty Point: The First Complex Delta Culture

  http://wayback.archive.org/web/20131207234411/http://www.deltablues.net/jon.html

  Keine Beschreibung vorhanden.

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