APA (7th ed.) Citation

Hirschfeld, R. (1899). Die Wiener Hofoper 1848-1898.

Chicago Style (17th ed.) Citation

Hirschfeld, Robert. Die Wiener Hofoper 1848-1898. 1899.

MLA (9th ed.) Citation

Hirschfeld, Robert. Die Wiener Hofoper 1848-1898. 1899.

Warning: These citations may not always be 100% accurate.