Beutel, D. Heraldik Information: Dieter Beutel. Dieter Beutel.
Cita Chicago (17th ed.)Beutel, Dieter. Heraldik Information: Dieter Beutel. St. Augustin: Dieter Beutel.
Cita MLA (8th ed.)Beutel, Dieter. Heraldik Information: Dieter Beutel. Dieter Beutel.
Atenció: Aquestes cites poden no estar 100% correctes.