Personal CertaintyValentin Tomberg, Stephen Churchyard, James R. Wetmore, Friederike Migneco, Volker Zotz · First published 2022Open the Tome
Pop Culture in Language EducationValentin Werner, Friederike Tegge · First published 2020Open the Tome
Lexikon der Sekten, Sondergruppen und WeltanschauungenHans Gasper, Joachim Müller, Friederike Valentin · First published 1990Open the Tome
