Fonte positiva dos dados

Sec. de: Verdi, Giuseppe. La forza del destino (Disco). 1977.

http://authorities.loc.gov/: (d.n.: 13/03/1929 ; mezzo-soprano americana)

http://catalogue.bnf.fr/: (d.n.: 1931)

http://catalogue.bnf.fr/: (d.n.: 1929)

http://www.bach-cantatas.com/Bio/Elias-Rosalind.htm: (d.n.: 1930)