Wrigley, Julia (1982). "The Division between Mental and Manual Labor: Artisan Education in Science in Nineteenth-Century Britain". The American Journal of Sociology. 88: S31–S51. doi:10.1086/649251. JSTOR3083238. S2CID144431298.
Wrigley, Julia (1982). "The Division between Mental and Manual Labor: Artisan Education in Science in Nineteenth-Century Britain". The American Journal of Sociology. 88: S31–S51. doi:10.1086/649251. JSTOR3083238. S2CID144431298.
Knowledge, Wisdom, Humanity: Portraits from our Past – not dated, c. 2013 – Booklet designed
by the Division of Communications and Marketing, University of Manchester, Published by the University of Manchester, p. 5. [1]
Wrigley, Julia (1982). "The Division between Mental and Manual Labor: Artisan Education in Science in Nineteenth-Century Britain". The American Journal of Sociology. 88: S31–S51. doi:10.1086/649251. JSTOR3083238. S2CID144431298.