Adrian Tang,, Sophia Scoggins. Open Networking with OSI . Prentice-Hall, 1992. ISBN 0-13-351842-6
James Martin, Joe Leben. DECnet Phase IV “ An OSI Implementation . Digital Press. 1992. ISBN 1-55558-076-9
ISO 7498 AD1: Information Processing Systems “ Open Systems Interconnection “ Basic Reference Model “ Addendum 1: Connectionless-Mode Transmission
ISO 7498: Information Processing Systems “ Open Systems Interconnection “ Basic Reference Model