(1968). The Theory of the modern stage: An introduction to modern theatre and Drama. Penguin Bks..
Citazione stile Chigago Style (17a edizione)The Theory of the Modern Stage: An Introduction to Modern Theatre and Drama. Middlesex, England: Penguin Bks., 1968.
Citatione MLA (9a ed.)The Theory of the Modern Stage: An Introduction to Modern Theatre and Drama. Penguin Bks., 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.