The Meyerbeer libretti Italian Operas 2, Emma di Reburgo, Margherita d'Anjou - Meyerbeer, Giacomo 1791-1864 (Cambridge Scholars Publishing, 2008)
"This book first published as part of The complete libretti of Giacomo Meyerbeer in five volumes. This second edition first published 2008."–T.p. verso