APA (7th ed.) Citation

Karu, Z. Z. (2002). Signals and systems made ridiculously simple. ZiZi.

Chicago Style (17th ed.) Citation

Karu, Zoher Z. Signals and Systems Made Ridiculously Simple. Cambridge, Massachusetts: ZiZi, 2002.

MLA (9th ed.) Citation

Karu, Zoher Z. Signals and Systems Made Ridiculously Simple. ZiZi, 2002.