Leeds Heraldry Society. Aspects of heraldry. Leeds Heraldry Society.
Cita Chicago (17th ed.)Leeds Heraldry Society. Aspects of Heraldry. Leeds: Leeds Heraldry Society.
Cita MLA (8th ed.)Leeds Heraldry Society. Aspects of Heraldry. Leeds Heraldry Society.
Atenció: Aquestes cites poden no estar 100% correctes.