Yorkshire Heraldry Society. Aspects of heraldry. Yorkshire Heraldry Society.
Chicago-Zitierstil (17. Ausg.)Yorkshire Heraldry Society. Aspects of Heraldry. Leeds: Yorkshire Heraldry Society.
MLA-Zitierstil (8. Ausg.)Yorkshire Heraldry Society. Aspects of Heraldry. Yorkshire Heraldry Society.
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