BEATH, B. (1977). Marco polo A half-hour music drama for children. J. Albert & Son.
Čikaški stil citiranja (17. izdanje)BEATH, Betty. Marco Polo A Half-hour Music Drama for Children. J. Albert & Son, 1977.
MLA način citiranja (8. izdanje)BEATH, Betty. Marco Polo A Half-hour Music Drama for Children. J. Albert & Son, 1977.
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