APA-čujuhus (7. p.)
Holdhusen, D. (2011). Commitment to musical excellence: A 75 year history of the Gustavus choir. Cambridge Scholars Publishing.
Chicago-čujuhus (17. p.)
Holdhusen, David. Commitment to Musical Excellence: A 75 Year History of the Gustavus Choir. Newcastle upon Tyne: Cambridge Scholars Publishing, 2011.
MLA-čujuhus (9. p.)
Holdhusen, David. Commitment to Musical Excellence: A 75 Year History of the Gustavus Choir. Cambridge Scholars Publishing, 2011.
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