Dent, K. D. (2004). Postfix: The Definitive Guide. O`Reilly Associates.
Lua i Stíl Chicago (17ú heag.)Dent, Kyle D. Postfix: The Definitive Guide. Sebastopol: O`Reilly Associates, 2004.
Lua MLA (8ú heag.)Dent, Kyle D. Postfix: The Definitive Guide. O`Reilly Associates, 2004.
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