Unknown. American Lyric Tenor and Composer Roland Hayes Visiting Xavier University of Louisiana.
Chicago-referens (17:e uppl.)Unknown. American Lyric Tenor and Composer Roland Hayes Visiting Xavier University of Louisiana.
MLA-referens (8:e uppl.)Unknown. American Lyric Tenor and Composer Roland Hayes Visiting Xavier University of Louisiana.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.