^Tolkien, Tracy; Wilkinson, Henrietta. A Collector's Guide to Costume Jewelry Key Styles and how to recognize them. Firefly Books. 1997: 47. ISBN 1552091562.
^ 2.02.1Tolkien, Tracy; Wilkinson, Henrietta. A Collector's Guide to Costume Jewelry Key Styles and how to recognize them. Firefly Books. 1997: 49. ISBN 1552091562.
^ 5.05.1Gänsicke, Susanne; Markowitz, Yvonne J. Looking at jewelry: a guide to terms, styles, and techniques. Looking at. Los Angeles: The J. Paul Getty Museum. 2019. ISBN 978-1-60606-610-2.
^ 6.06.1JOTTINGS.. Newcastle Morning Herald and Miners' Advocate. 1900-08-04 [2024-05-13].