LSI-11 WCS user's guide(PDF) (1st ed.). Digital Equipment Corporation. June 1978. Archived(PDF) from the original on 23 February 2023. Retrieved 7 January 2023.
LSI-11 WCS user's guide(PDF) (1st ed.). Digital Equipment Corporation. June 1978. Archived(PDF) from the original on 23 February 2023. Retrieved 7 January 2023.