Lacko, M. (1963). Saints Cyril and Methodius. Slovak Editions "Sts. Cyril and Methodius,".
Chicago-viite (17. p.)Lacko, Michael. Saints Cyril and Methodius. Rome: Slovak Editions "Sts. Cyril and Methodius,", 1963.
MLA-viite (8. p.)Lacko, Michael. Saints Cyril and Methodius. Slovak Editions "Sts. Cyril and Methodius,", 1963.
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