Köhler, Joachim, 1952- (Autor Personal)

Zarathustras Geheimnis, 1989: title page (Joachim Köhler) jacket (born 1952)

German Wikipedia, viewed February 7, 2018 (Joachim Köhler (Philosoph); Joachim Köhler; born 1952 in Würzburg; philosopher and author; joined the editorial staff of the German magazine Stern in 1982, where he wrote on cultural issues; has published widely on Wagner and Nietzsche; he resides in Hamburg)

Friedrich Nietzsche und Cosima Wagner, ©1996: portada (Joachim Köhler)