アスガー・ハンメリク
Alexander J. Morin (editor). Classical Music: The Listener's Companion. Hal Leonard Corporation, 2002. ISBN 9780879306380; p. 377
E. Douglas Bomberger (editor). Brainard's Biographies of American Musicians, Vol. 79. Greenwood Publishing Group, 1999. ISBN 9780313307829; pp. 129–132