APA (7th ed.) Citation

Knowles, J. B. (1994). Direct digital control systems. Research Studies.

Chicago Style (17th ed.) Citation

Knowles, J. B. Direct Digital Control Systems. Taunton, Somerset, England: Research Studies, 1994.

MLA (9th ed.) Citation

Knowles, J. B. Direct Digital Control Systems. Research Studies, 1994.

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