Wildbihler, H., & Völklein, S. (1986). The musical: An international annotated bibliography - eine internationale annotierte Bibliographie / by Hubert Wildbihler and Sonja Völklein. Foreword by Thomas Siedheim. Saur.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWildbihler, Hubert, और Sonja Völklein. The Musical: An International Annotated Bibliography - Eine Internationale Annotierte Bibliographie / by Hubert Wildbihler and Sonja Völklein. Foreword by Thomas Siedheim. München [u.a.]: Saur, 1986.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWildbihler, Hubert, और Sonja Völklein. The Musical: An International Annotated Bibliography - Eine Internationale Annotierte Bibliographie / by Hubert Wildbihler and Sonja Völklein. Foreword by Thomas Siedheim. Saur, 1986.
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