Raymond Ericson. "Concert Brass Quintet" The New York Times, March 20, 1980

Donald Rosenberg,. "Torquemada comes home a winner". The Pittsburgh Press, Nov. 11, 1991.

P.E. Stone. He writes for the Audience, But on His Own Terms."The New York Times," Nov. 21, 1982.

Carnegie Mellon University , catalogue and essay, 1982

P.E. Stone"Leonardo Balada’s First Half Century." Symphony Magazine XXXIV/3 (1983).

David Wright. "Balada, Leonardo" in The New Grove Dictionary of American Music." H.Wiley Hitchcock and Stanley Sadie, eds. London and New York : Macmillan, 1986.

Dennisk McIntire, Baker’s Biographical Dictionary of Musicians.

David Wright. The New Grove Dictionary of Opera.

International Who’s Who in Music. Cambridge, Great Britain.

Who’s Who in America (Marquis)

Who’s Who in the World (Marquis)

Catalogue "Encontre Internacional de Compositors XVIII" Palma de Mallorca-1997

Fundación ACA-Buger (Mallorca-Spain)