Robert Garland Colodny, The Struggle for Madrid: The Central Epic of the Spanish Conflict (1936--37) (New York: Paine-Whitman, 1958); Thomas, Spanish Civil War, 465--66; Beevor, Battle for Spain, 478--80; and Nunzio Pernicone, "The Battle of Guadalajara: Italian Anti-Fascists in the Spanish Civil War," La Parola del Popolo, November--December 1978, 132--40.
Paz, Durruti, 487; Lines, Milicianas, 81; and Franco Giannantoni and Fabio Minazzi, eds., Il coraggio della memoria e la guerra civile spagnola (1936--1939): studi, documenti inediti e testimonianze, con la prima analisi storico-quantitat