A. Smith-didn, to describe the second key concept of his theory He called it " the productive power of labour " . He could quite easily have used the more modern term " productivity " . According to the Dictionnaire historique de la langue française the latter term was invented in France in 1766. The multiple references hypothesis does not help explain one important part of Smith's pin making thesis. The production rate of 1 to 20 pins per day of a polyvalent worker is not given in the French texts This reference still remains a mystery

J. Bonar, 1894, A catalogue of the library of Adam Smith, rééditions en, 1932.

E. Cannan, 1896, Introduction to Smith's Lectures on Justice

A. Ferguson, An essay on the history of civil society (1767), 1966.
DOI : 10.1017/CBO9780511620409.046

A. Ferguson, 1792, Principles of Moral and Political Science

P. D. Groenewegen, ADAM SMITH AND THE DIVISION OF LABOUR: A BICENTENARY ESTIMATE, Australian Economic Papers, vol.16, issue.29, pp.161-174, 1977.
DOI : 10.1111/j.1467-8454.1977.tb00597.x

R. Hamowy, Adam Smith, Adam Ferguson, and the Division of Labour, Economica, vol.35, issue.139, pp.249-259, 1968.
DOI : 10.2307/2552301

C. H. Hull, The economic writing of Sir William Petty, 1899.

D. Kettler, The social and political thought of Adam Ferguson, 1965.

M. Ph, Dictionnaire portatif des arts et métiers, contenant l'abrégé en abrégé l'histoire, la description et la police des arts et métiers, des fabriques et des manufactures de France et des pays étrangers, 1766.

T. Mortimer, 1766, A new and complete dictionary of trade and commerce

W. Petty, Another essay in political arithmetic, 1893.

J. Rae, 1895, Life of Adam Smith, réédité en 1965 avec une introduction de Jacob Viner

S. Rashid, ADAM SMITH AND THE DIVISION OF LABOUR: A HISTORICAL VIEW, Scottish Journal of Political Economy, vol.33, issue.3, pp.292-297, 1986.
DOI : 10.1111/j.1467-9485.1986.tb00832.x

S. Rashid, The myth of Adam Smith, 1998.

I. S. Ross, The Life of Adam Smith, 1995.
DOI : 10.1093/0198288212.001.0001

M. N. Rothbard, Economic thought before Adam Smith, an Austrian perspective on the history of economic thought, 1995.

J. A. Schumpeter, History of economic analysis, 1954.

A. Smith, Inquiry into the nature and causes of the Wealth of Nations, 1776.