Boydell, B. (1982). The Crumhorn and other Renaissance Windcap Instruments: A Contribution to Renaissance Organology. Frits Knuf.
Chicago-viite (17. p.)Boydell, Barra. The Crumhorn and Other Renaissance Windcap Instruments: A Contribution to Renaissance Organology. Buren/NL: Frits Knuf, 1982.
MLA-viite (8. p.)Boydell, Barra. The Crumhorn and Other Renaissance Windcap Instruments: A Contribution to Renaissance Organology. Frits Knuf, 1982.
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