.Parr, E. A., .Parr, E., Bsc, & .Eng, C. (1998). Industrial control handbook. Newnes ; Available in North America from Industrial Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र.Parr, E. A., E.A .Parr, Bsc, और C. .Eng. Industrial Control Handbook. Oxford, England ; Boston : New York: Newnes ; Available in North America from Industrial Press, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्र.Parr, E. A., et al. Industrial Control Handbook. Newnes ; Available in North America from Industrial Press, 1998.