Markus, J., & Weston, C. (1988). Essential circuits reference guide. McGraw-Hill.
Cita Chicago (17th ed.)Markus, John, i Charles Weston. Essential Circuits Reference Guide. New York: McGraw-Hill, 1988.
Cita MLA (9th ed.)Markus, John, i Charles Weston. Essential Circuits Reference Guide. McGraw-Hill, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.