Bordas Ibáñez, C., Dilworth, J., & Pozas, J. (2014). The golden age of violin making in Spain: Instruments by José Contreras, José Melitón Contreras, Silverio Ortega, Mariano Ortega, Vicente Assensio, Salvador Bofill, Joan Guillami I & Joan Guillami II. [s.l.]: Tritó Ed.

The golden age of violin making in Spain : Instruments by José Contreras, José Melitón Contreras, Silverio Ortega, Mariano Ortega, Vicente Assensio, Salvador Bofill, Joan Guillami I & Joan Guillami II / historical research by Cristina Bordas ... technical research by John Dilworth ... ed. by Jorge Pozas . — [s.l.] : Tritó Ed, 2014. — 410 S.; überw. Ill. — ISBN 9788492852130, 8492852135

Bordas Ibáñez, Cristina, John Dilworth, and Jorge Pozas. The Golden Age of Violin Making in Spain: Instruments By José Contreras, José Melitón Contreras, Silverio Ortega, Mariano Ortega, Vicente Assensio, Salvador Bofill, Joan Guillami I & Joan Guillami II.[s.l.]: Tritó Ed, 2014.