| APA | SOPPA. (2012, February 11). In Acronym Geek. Retrieved 11:55, February 11, 2012, from http://www.acronymgeek.com/SOPPA |
| MLA | "SOPPA." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/SOPPA>. |
| MHRA | 'SOPPA', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/SOPPA> [accessed 11 February 2012] |
| Chicago | "SOPPA", http://www.acronymgeek.com/SOPPA (accessed February 11, 2012). |
| CBE/CSE | SOPPA [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/SOPPA. |
| Bluebook | SOPPA, http://www.acronymgeek.com/SOPPA (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SOPPA, http://www.acronymgeek.com/SOPPA (optional description here) (as of Feb. 11, 2012, 11:55). |
| AMA | SOPPA. Acronym Geek. February 11, 2012, 11:55. Available at: http://www.acronymgeek.com/SOPPA. Accessed February 11, 2012, 11:55. |