| APA | UPSI. (2012, February 11). In Acronym Geek. Retrieved 21:30, February 11, 2012, from http://www.acronymgeek.com/UPSI |
| MLA | "UPSI." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/UPSI>. |
| MHRA | 'UPSI', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/UPSI> [accessed 11 February 2012] |
| Chicago | "UPSI", http://www.acronymgeek.com/UPSI (accessed February 11, 2012). |
| CBE/CSE | UPSI [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/UPSI. |
| Bluebook | UPSI, http://www.acronymgeek.com/UPSI (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UPSI, http://www.acronymgeek.com/UPSI (optional description here) (as of Feb. 11, 2012, 21:30). |
| AMA | UPSI. Acronym Geek. February 11, 2012, 21:30. Available at: http://www.acronymgeek.com/UPSI. Accessed February 11, 2012, 21:30. |