ISO/IEC 9945-1:1996 Informationstechnologie – Portable Operating System Interface (POSIX) – Teil 1: System Application Program Interface (API) [C-Sprache]
2004ISO/IEC 9945-1:2003/Cor 1:2004 Informationstechnologie – Portable Operating System Interface (POSIX) – Teil 1: Basisdefinitionen; Technische Berichtigung 1
2003ISO/IEC 9945-1:2003 Informationstechnologie – Portable Operating System Interface (POSIX?) – Teil 1: Basisdefinitionen
2002ISO/IEC 9945-1:2002 Informationstechnologie – Portable Operating System Interface (POSIXę) – Teil 1: Basisdefinitionen
1996ISO/IEC 9945-1:1996 Informationstechnologie – Portable Operating System Interface (POSIX) – Teil 1: System Application Program Interface (API) [C-Sprache]