Collin, B. (1955). The riddle of a 13th century sword-belt: By Bertha Collin. The Heraldry Society.
Chicago Style (17th ed.) CitationCollin, Bertha. The Riddle of a 13th Century Sword-belt: By Bertha Collin. East Knoyle, Wiltshire: The Heraldry Society, 1955.
MLA (8th ed.) CitationCollin, Bertha. The Riddle of a 13th Century Sword-belt: By Bertha Collin. The Heraldry Society, 1955.
Warning: These citations may not always be 100% accurate.