Additional
Information: A mercantilist economist also regarded as a forerunner of the Classical school, Karl Marx regarded him as the founder of economics.
Petty, Sir William Sites:
Petty, Sir William Petty, Sir William: Article from the Wikipedia open encyclopedia project. (Petty, Sir William) http://en.wikipedia.org/wiki/Sir_William_Petty
William Petty William Petty: From Thoemmes Press' Dictionary of Seventeenth-Century British Philosophers. (Petty, Sir William) http://www.thoemmes.com/dictionaries/petty.htm
Works of William Petty Works of William Petty: Several of his books and notes. (Petty, Sir William) http://www.cpm.ll.ehime-u.ac.jp/AkamacHomePage/Akamac_E-text_Links/Petty.html
History of Economic Thought | Sir William Petty History of Economic Thought | Sir William Petty: Biography, links, and works. (Petty, Sir William) http://cepa.newschool.edu/het/profiles/petty.htm
Economic theorists: William Petty Economic theorists: William Petty: About the life and studies of Sir William Petty. From the economy professor site. (Petty, Sir William) http://www.economyprofessor.com/theorists/williampetty.html
BBC - History - Sir William Petty (1623 - 1687) BBC - History - Sir William Petty (1623 - 1687): Most famous as a political economist and statistician, he made a fortune using soldiers to survey Ireland, and invented the catamaran. (Petty, Sir William) http://www.bbc.co.uk/history/historic_figures/petty_william.shtml