APA (7th ed.) Citation

Parks & Burrus. (1987). Digital filter design. John Wiley and Sons.

Chicago Style (17th ed.) Citation

Parks and Burrus. Digital Filter Design. Toronto: John Wiley and Sons, 1987.

MLA (9th ed.) Citation

Parks and Burrus. Digital Filter Design. John Wiley and Sons, 1987.

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