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References
- ↑ "Necis [sic] Joins 16-Bit Auction By Releasing APC System". Computerworld : 45–46. 1982-05-31. (NB. The article contains an obvious transmission error, the company's name is NEC Information Systems, Inc., not Necis.)
- 1 2 NEC Information Systems, Inc. (November 1983). Advanced Personal Computer - MS-DOS System Programmer's Guide (PDF) (REV 00 ed.). NEC Corporation. pp. B.1–B.4. part number 819-000104-3001. Archived (PDF) from the original on 2016-11-25. Retrieved 2016-11-25.
