APA (7th ed.) Citation

Lockhart, G. B., & Cheetham, B. M. G. (1989). BASIC digital signal processing. Butterworths.

Chicago Style (17th ed.) Citation

Lockhart, Gordon B., and Barry M. G. Cheetham. BASIC Digital Signal Processing. London ; Boston: Butterworths, 1989.

MLA (9th ed.) Citation

Lockhart, Gordon B., and Barry M. G. Cheetham. BASIC Digital Signal Processing. Butterworths, 1989.

Warning: These citations may not always be 100% accurate.