Diana Scarisbrick, Claudia Wagner, John Boardman, The Guy Ladrière Collection of Gems and Rings. London–New York: Philip Wilson Publishers 2016, 301 pages, 480 illustrations (colour); ISBN 978-1-78130-039-8

Diana Scarisbrick, Claudia Wagner, John Boardman, The Guy Ladrière Collection of Gems and Rings. London–New York: Philip Wilson Publishers 2016, 301 pages, 480 illustrations (colour); ISBN 978-1-78130-039-8