Angeles County Metropolitan Transportation Authority (Metro). June 13, 2013 [2013-06-28]. (原始内容存档于2019-08-20). Trolley History. Memphis Area Transit Authority
2007, p.103 [2] Source:"Butkara I", Faccena "Gandhara" Francine Tissot The Turin City Museum of Ancient Art Text and photographic reference: Terre Lontane