Intel. (1990). i489 microprocessor Programmer's reference manual. McGraw-Hill.
Cita Chicago (17th ed.)Intel. I489 Microprocessor Programmer's Reference Manual. New York: McGraw-Hill, 1990.
Cita MLA (9th ed.)Intel. I489 Microprocessor Programmer's Reference Manual. McGraw-Hill, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.