Do you still need to cite a source in your paper, if it is:Group of answer choicesOut of copyrightOpen access (full-text freely available on the Web)

Yes, you still need to cite a source in your paper even if it is out of copyright or open access. Here's why:

1. Academic Integrity: Citing sources is a fundamental aspect of academic integrity. It shows respect for the original author's work and allows your readers to follow up and read the original source if they wish.

2. Avoid Plagiarism: Even if a work is out of copyright or open access, it doesn't mean it's in the public domain. Using someone else's work without giving them credit is still plagiarism.

3. Traceability: Citations allow your readers to trace where you found your information. This is important for the credibility of your paper and to support your arguments.

4. Copyright isn't the same as ownership: Just because a work is out of copyright, it doesn't mean that the work is not owned. The work could be in the public domain, or the copyright could have been transferred to another entity.

5. Open Access doesn't mean free to use without citation: Open access means that the full text is freely available on the web. It doesn't mean that you can use the work without citing it. The authors of open access works still retain their copyright and must be credited for their work.

So, regardless of the copyright status or accessibility of a source, you should always cite your sources in your academic papers.