early examples are the depiction of wrestling techniques in a tomb of the Middle Kingdom of Egypt at Beni Hasan (c. 2000 BC) and pictorial representations
(原始内容存档于2011-08-16). Jilly Cooper, Class: a view from middle England. Eyre Methuen. [2009-10-04]. The Shape of the Working Class. [2012-11-18]. (原始内容存档于2015-04-16)