↑MORTIMER, Thomas. A general dictionary of commerce, trade, and manufactures. Londýn : [s.n.], 1810.
↑Wyndham Beawes, Jacques Savary des Brusions: Lex mercatoria rediviva: or, The merchant's directory, tisk James Williams, 1773, kap. „Of the General Trade of the World“, str. 766
↑Daniel Fenning: The Royal English dictionary: or, A treasury of the English language, R. Baldwin, J. Richardson, 1763
↑George Crabb: Universal technological dictionary or familiar explanation of the terms used in all arts and sciences containing definitions drawn from the original writers, Baldwin, Cradock & Joy, Londýn, 1823, díl I, str. 7
↑Glossary of Pearl Terms – A, Pearl-Guide.com, The World's Largest Pearl Information Source, Los Angeles, Kalifornie, 2008
