First published in English by Musical New Services Limited, UK in 1983, 1994 ISBN 0-933224-84-2*"Andrés Segovia, Manuel M. Ponce, Miguel Alcázar, Peter Segal: "The Segovia - Ponce Letters", Columbus, OH, Editions Orphée, 1989 ISBN 0-936186-29-1*Ricardo Miranda Pérez, Grove Music Online*Jorge Barrón Corvera: "Manuel María Ponce: A Bio-Bibliography", Westport, CT, Praeger, 2004 ISBN 0-313-31823-9* Henderson, John.
First published in English by Musical New Services Limited, UK in 1983, 1994 ISBN 0-933224-84-2* Andrés Segovia, Manuel M. Ponce, Miguel Alcázar, Peter Segal: «The Segovia — Ponce Letters», Columbus, OH, Editions Orphée, 1989 ISBN 0-936186-29-1* Ricardo Miranda Pérez, Grove Music Online* Grove Music Online* Ponce’s Baroque Pastiches, by Peter Kun Frary, Professor of Music — University of Hawaii