APA (7th ed.) Citation

Yeung, P., & Rees, D. (1991). A comparison of hardware description languages.

Chicago Style (17th ed.) Citation

Yeung, Ping, and David Rees. A Comparison of Hardware Description Languages. Edinburgh, 1991.

MLA (9th ed.) Citation

Yeung, Ping, and David Rees. A Comparison of Hardware Description Languages. 1991.

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