You should definitely remember to cite your poster presentation on your resume. 

APA Citation Style

Shreeves, S, M. K. Hensley, and S. Davis-Kahl (2013, April 10). Completing the research cycle, Part 2: Perceptions of library support from campus undergraduate research coordinators. Poster session presented at ACRL Conference, Indianapolis, IN. https://www.ideals.illinois.edu/handle/2142/46420 

For more information, visit the Purdue Online Writing Lab: APA Classroom Poster

IDEALS (Illinois Digital Environment for Access to Learning and Scholarship) is the University of Illinois institutional repository. You are encouraged to archive your final project as well as your poster so that future researchers can build off the questions that you asked in your research.

If you are a graduate student, faculty member or staff, login to your account. At this time, archiving for undergraduates is not available. 

Benefits to depositing your work into IDEALS:

1. Long term preservation and increased exposure to your work.
2. Future members of our academic community can build off the questions that you asked in your research.
3. You will receive a permanent URL that can be used in your resume for persistent access. 
4. Your work will be indexed in Google. This is a great way to establish your reputation as a scholar. 
5. You can see the number of downloads for your work while contributing to the record of Illinois scholarship.