Websites
- Wales, J. (2001), Wikipedia [Internet], Ben Kovitz, San Diego. Available from: https://en.wikipedia.org/wiki/Four_occupations [1/6/15].
- Nelson,K.(2005), Ducksters [Intrenet], Ken Nelson, North Carolina. Available from: http://www.ducksters.com/history/china/daily_life.php [1/6/15].
- (2012), History for Kids [Internet], Professor Karen Carr, State University in Portland. Available from: http://www.historyforkids.org/learn/china/people/school.htm [20/6/15].
- Columbia University. (2009), Asia For Educators, Memorial On The Encouragement Of Agriculture [Internet], Columbia University, New York. Available From: http://afe.easia.columbia.edu/ps/cup/chaocuo_agriculture.pdf [accessed 20 June 2015].
- Hirst, Kris K. (2015), Silk Road [Internet], About.com, Available from: http://archaeology.about.com/od/shthroughsiterms/qt/silk_route.htm [Accessed 20 June 2015].
- P.R. China Ministry of Culture. (2015), Ancient China's Merchant Groups and Merchant Culture [Internet], P.R. China Ministry of Culture, Available from: http://archaeology.about.com/od/shthroughsiterms/qt/silk_route.htm [Accessed 20 June 2015].
- Junmian, Z (2011), Top 10 regional merchant groups in ancient China [Internet], china.org.cn, Available from: http://www.china.org.cn/top10/2011-11/16/content_23932778.htm [Accessed 19 June 2015].
Books
- Steele, P. (2013), Ancient China,Joanna Lorenz, Leicestershire.
- Allan, T. (2007), Cultural Atlas For Young People - Ancient China, The Brown Reference Group plc, New York.