| APA | OXPA. (2012, February 16). In Acronym Geek. Retrieved 22:19, February 16, 2012, from http://www.acronymgeek.com/OXPA |
| MLA | "OXPA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OXPA>. |
| MHRA | 'OXPA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OXPA> [accessed 16 February 2012] |
| Chicago | "OXPA", http://www.acronymgeek.com/OXPA (accessed February 16, 2012). |
| CBE/CSE | OXPA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OXPA. |
| Bluebook | OXPA, http://www.acronymgeek.com/OXPA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OXPA, http://www.acronymgeek.com/OXPA (optional description here) (as of Feb. 16, 2012, 22:19). |
| AMA | OXPA. Acronym Geek. February 16, 2012, 22:19. Available at: http://www.acronymgeek.com/OXPA. Accessed February 16, 2012, 22:19. |