APA (7th ed.) Citation

Heffer, D. E., King, G. A., & Keith, D. C. (1986). Basic principles and practice of microprocessors (2nd ed.). Edward Arnold.

Chicago Style (17th ed.) Citation

Heffer, D. E., G. A. King, and D. C. Keith. Basic Principles and Practice of Microprocessors. 2nd ed. London: Edward Arnold, 1986.

MLA (9th ed.) Citation

Heffer, D. E., et al. Basic Principles and Practice of Microprocessors. 2nd ed. Edward Arnold, 1986.