Sydnor, J. R. (1960). The hymn and congregational singing. John Knox.
Chicago-čujuhus (17. p.)Sydnor, James Rawlings. The Hymn and Congregational Singing. Richmond: John Knox, 1960.
MLA-čujuhus (9. p.)Sydnor, James Rawlings. The Hymn and Congregational Singing. John Knox, 1960.
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