Leigh T.I. Penman, A Second Christian Rosencreuz? Jakob Böhme's Disciple Balthasar Walther (1558-c.1630) and the Kabbalah. With a Bibliography of Walther's Printed Works, in: Western Esotericism. Selected Papers Read at the Symposium on Western Esotericism held at Åbo, Finland, 15–17 agosto 2007. (Scripta instituti donneriani Aboensis, XX), T. Ahlbäck, ed. Åbo, Finlandia: Donner Institute, 2008, pp. 154-172. Disponibile online [1]Archiviato il 30 giugno 2016 in Internet Archive.
Leigh T.I. Penman, A Second Christian Rosencreuz? Jakob Böhme's Disciple Balthasar Walther (1558-c.1630) and the Kabbalah. With a Bibliography of Walther's Printed Works, in: Western Esotericism. Selected Papers Read at the Symposium on Western Esotericism held at Åbo, Finland, 15–17 agosto 2007. (Scripta instituti donneriani Aboensis, XX), T. Ahlbäck, ed. Åbo, Finlandia: Donner Institute, 2008, pp. 154-172. Disponibile online [1]Archiviato il 30 giugno 2016 in Internet Archive.