| Style | Reference Text |
|---|
| APA | SPO. (2013, May 19). In All Acronyms. Retrieved 20:44, May 19, 2013, from http://www.all-acronyms.com/cat/6/SPO |
| MLA | "SPO." All Acronyms. 19 May 2013, 20:44. All Acronyms. 19 May 2013 <http://www.all-acronyms.com/cat/6/SPO>. |
| MHRA | 'SPO', All Acronyms, 19 May 2013, 20:44, <http://www.all-acronyms.com/cat/6/SPO> [accessed 19 May 2013] |
| Chicago | "SPO," http://www.all-acronyms.com/cat/6/SPO (accessed May 19, 2013). |
| CBE/CSE | SPO [Internet]. All Acronyms; 2013 May 19, 20:44 [cited 2013 May 19]. Available from: http://www.all-acronyms.com/cat/6/SPO. |
| Bluebook | SPO, http://www.all-acronyms.com/cat/6/SPO (last visited May 19, 2013). |
| Bluebook: Harvard JOLT | See All Acronyms, SPO, http://www.all-acronyms.com/cat/6/SPO (optional description here) (as of May. 19, 2013, 20:44). |
| AMA | SPO. All Acronyms. May 19, 2013, 20:44. Available at: http://www.all-acronyms.com/cat/6/SPO. Accessed May 19, 2013. |
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