The Concise Oxford Companion to the Theatre by 
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The Oxford Companion to American Theatre by This link opens in a new window
The Oxford Companion to the American Musical by This link opens in a new window
The Oxford Companion to Theatre and Performance by This link opens in a new window
The Oxford Dictionary of Plays by This link opens in a new window
The Oxford Dictionary of Dance by This link opens in a new window
The Routledge Companion to Music and Visual Culture by This link opens in a new window
