Lynds, G., & Ludlum, R. (2003). Robert Ludlum's The Altman code. St. Martin's Press, Orion Books.
Lua i Stíl Chicago (17ú heag.)Lynds, Gayle, agus Robert Ludlum. Robert Ludlum's The Altman Code. New York : London: St. Martin's Press, Orion Books, 2003.
Lua MLA (8ú heag.)Lynds, Gayle, agus Robert Ludlum. Robert Ludlum's The Altman Code. St. Martin's Press, Orion Books, 2003.
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