Grove, Jan. 22, 2004 (Coltellini, Marco; b. Livorno, 13 Oct. 1719; d. St. Petersburg, Nov. 1777)
Haydn, J. L'infedeltà delusa, 1964 t.p. (M. Coltellini)
Grove music online, November 30, 2015: article from New Grove dictionary of opera (Marco Coltellini; born October 13 1719, Livorno, died November 1777, St. Petersburg; Italian librettist) article from New Grove (Marco Coltellini; born May 4, 1724, Montepulciano, died November 1777, St. Petersburg; Italian librettist)
MGG, zweite, neubearbeitete Ausgabe under Coltellini (Marco (Agostino Baldassare); born May 4, 1724, Montepulciano, died November 17, 1777, St. Petersburg; librettist
Visited Wikipedia, 1/15/2019 Marco Coltellini (set up a print shop in Livorno)