Griffel, M. R. (2013). Operas in English: A dictionary (Revised edition.). Scarecrow Press.
Čikaški stil citiranja (17. izdanje)Griffel, Margaret Ross. Operas in English: A Dictionary. Revised edition. Lanham, Maryland: Scarecrow Press, 2013.
MLA način citiranja (9. izdanje)Griffel, Margaret Ross. Operas in English: A Dictionary. Revised edition. Scarecrow Press, 2013.
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