Urdang international. (2020). Urdang international: Bringing London's West End Training To The World. Theurdang international.
Chicago-referens (17:e uppl.)Urdang international. Urdang International: Bringing London's West End Training To The World. London: Theurdang international, 2020.
MLA-referens (9:e uppl.)Urdang international. Urdang International: Bringing London's West End Training To The World. Theurdang international, 2020.
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