Dance: live performance [from Direct communication using APA 6th ed.]
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Live performances of plays are not recoverable, so cannot be added to your reference list. If what you have watched is a recording of a live performance you can reference the recording (see separate page) because the recording is recoverable. However, you can cite a live performance in your text, and could include the details of the work, artists [director, and actors if relevant], location of the performance and the date.
Citation in Text
... in the performance of Sleeping Beauty with Alina Cojocaru and Johan Kobborg at Covent Garden, October 28, 2006 it was observed that ...