APA (7th ed.) Zitazioa
Winther, S. K. (1961). Eugene O'Neill: A critical study. Russell and Russell.
Chicago Style (17th ed.) Zitazioa
Winther, Sophus Keith. Eugene O'Neill: A Critical Study. New York: Russell and Russell, 1961.
MLA (9th ed.) Zitazioa
Winther, Sophus Keith. Eugene O'Neill: A Critical Study. Russell and Russell, 1961.
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