Biblioteca Nacional Alemana http://d-nb.info/gnd/30004285X
Biblioteca del Congreso de los EEUU http://id.loc.gov/authorities/names/no95014185
VIAF http://viaf.org/viaf/176650902
Fuente consultada The New Grove Dictionary of Music and Musicians, 2001
Información encontrada (Delius, Frederich; works; choral and vocal; Song of sunset, mez, bar, chorus, orch; 1906)