Beutel, D. Heraldik Information: Dieter Beutel. Dieter Beutel.
Chicagoスタイル(17版)引用形式Beutel, Dieter. Heraldik Information: Dieter Beutel. St. Augustin: Dieter Beutel.
MLA(8版)引用形式Beutel, Dieter. Heraldik Information: Dieter Beutel. Dieter Beutel.
警告: この引用は必ずしも正確ではありません.