| APA | SMPO. (2012, February 17). In Acronym Geek. Retrieved 02:26, February 17, 2012, from http://www.acronymgeek.com/SMPO |
| MLA | "SMPO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/SMPO>. |
| MHRA | 'SMPO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/SMPO> [accessed 17 February 2012] |
| Chicago | "SMPO", http://www.acronymgeek.com/SMPO (accessed February 17, 2012). |
| CBE/CSE | SMPO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/SMPO. |
| Bluebook | SMPO, http://www.acronymgeek.com/SMPO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SMPO, http://www.acronymgeek.com/SMPO (optional description here) (as of Feb. 17, 2012, 02:26). |
| AMA | SMPO. Acronym Geek. February 17, 2012, 02:26. Available at: http://www.acronymgeek.com/SMPO. Accessed February 17, 2012, 02:26. |