unknown value, Палестрина, Riemanns musiklexikon (1901–1904).[källa från Wikidata]
William Smyth Rockstro & Donald Tovey, Palestrina, Giovanni Pierluigi da, Encyclopædia Britannica 1911, ”These troubles, however, did not hinder his work, which he continued without intermission until the 2nd of February 1594, when he breathed his last in the arms of his friend, Filippo Neri.”.[källa från Wikidata]
E. H. Pember, Palestrina, Giovanni, A Dictionary of Music and Musicians, 1900, ”He took to his bed on January 26, 1594, and died on February 2.”.[källa från Wikidata]
