Lombardy, W. (1972). Modern chess opening traps. D. McKay Cacho Hermanos.
Lua i Stíl Chicago (17ú heag.)Lombardy, William. Modern Chess Opening Traps. New York, Mandaluyong, Rizal: D. McKay Cacho Hermanos, 1972.
Lua MLA (9ú heag.)Lombardy, William. Modern Chess Opening Traps. D. McKay Cacho Hermanos, 1972.
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