* ACM Digital Library (ACM SIGPLAN): This is a very popular style, often specified by conferences and journals affiliated with the Association for Computing Machinery (ACM). It's similar to the author-year style, but with specific formatting requirements.
* IEEE (Institute of Electrical and Electronics Engineers): Another widely used style, particularly prevalent in publications related to electrical engineering and computer engineering. It tends to be more numerical than the author-year styles.
* Chicago/Turabian: While less common in core computer science publications, Chicago and Turabian styles are sometimes used, especially for papers with a stronger theoretical or philosophical bent.
* APA (American Psychological Association): While primarily used in the social sciences, APA style is occasionally seen in human-computer interaction (HCI) or cognitive science related papers within computer science.
In short: Always check the author guidelines provided by the specific conference or journal you are targeting. They will explicitly state the required citation style, often with detailed formatting instructions and examples. Failing to adhere to the specified style can lead to your paper being rejected outright. Many journals and conferences provide LaTeX templates or BibTeX style files to assist with formatting.