APA (7th ed.) Citation

Johnson, D. E. (1976). Introduction to filter theory. Prentice-Hall.

Chicago Style (17th ed.) Citation

Johnson, David E. Introduction to Filter Theory. Englewood Cliffs, N.J.: Prentice-Hall, 1976.

MLA (9th ed.) Citation

Johnson, David E. Introduction to Filter Theory. Prentice-Hall, 1976.