APA (7th ed.) Citation

Haykin, S. S. (1989). An introduction to analog and digital communications. Wiley.

Chicago Style (17th ed.) Citation

Haykin, Simon S. An Introduction to Analog and Digital Communications. New York: Wiley, 1989.

MLA (8th ed.) Citation

Haykin, Simon S. An Introduction to Analog and Digital Communications. Wiley, 1989.

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