| APA | SOPP. (2012, February 11). In Acronym Geek. Retrieved 17:09, February 11, 2012, from http://www.acronymgeek.com/SOPP |
| MLA | "SOPP." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/SOPP>. |
| MHRA | 'SOPP', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/SOPP> [accessed 11 February 2012] |
| Chicago | "SOPP", http://www.acronymgeek.com/SOPP (accessed February 11, 2012). |
| CBE/CSE | SOPP [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/SOPP. |
| Bluebook | SOPP, http://www.acronymgeek.com/SOPP (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SOPP, http://www.acronymgeek.com/SOPP (optional description here) (as of Feb. 11, 2012, 17:09). |
| AMA | SOPP. Acronym Geek. February 11, 2012, 17:09. Available at: http://www.acronymgeek.com/SOPP. Accessed February 11, 2012, 17:09. |