| APA | UPAO. (2012, February 11). In Acronym Geek. Retrieved 22:19, February 11, 2012, from http://www.acronymgeek.com/UPAO |
| MLA | "UPAO." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/UPAO>. |
| MHRA | 'UPAO', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/UPAO> [accessed 11 February 2012] |
| Chicago | "UPAO", http://www.acronymgeek.com/UPAO (accessed February 11, 2012). |
| CBE/CSE | UPAO [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/UPAO. |
| Bluebook | UPAO, http://www.acronymgeek.com/UPAO (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UPAO, http://www.acronymgeek.com/UPAO (optional description here) (as of Feb. 11, 2012, 22:19). |
| AMA | UPAO. Acronym Geek. February 11, 2012, 22:19. Available at: http://www.acronymgeek.com/UPAO. Accessed February 11, 2012, 22:19. |