Sabine Hark, Paula-Irene Villa (eds.): Anti-Genderism: Sexuality and Gender as Sites of Current Political Controversy. 2nd edition, transcript, Berlin 2015, ISBN 3-8376-3144-3, p. 116.
Harald Lamprecht: Archived(Date missing) at confessio.de (Error: unknown archive URL) Materialdienst der Evangelischen Zentralstelle für Weltanschauungsfragen, 4/2003