'William III, 1696-7: An Act for the lessening the Duty upon Tin and Pewter exported and granting an Equivalent for the same by a Duty upon Druggs. [Chapter XXXIV. Rot.Parl.8&9 Gul.III.p.11.nu.3.]', Statutes of the Realm: volume 7: 1695-1701 (1820), pp. 288. URL: http://british-history.ac.uk/report.aspx?compid=46882 Date accessed: 31 July 2014.