| APA | SPPR. (2012, February 11). In Acronym Geek. Retrieved 21:36, February 11, 2012, from http://www.acronymgeek.com/SPPR |
| MLA | "SPPR." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/SPPR>. |
| MHRA | 'SPPR', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/SPPR> [accessed 11 February 2012] |
| Chicago | "SPPR", http://www.acronymgeek.com/SPPR (accessed February 11, 2012). |
| CBE/CSE | SPPR [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/SPPR. |
| Bluebook | SPPR, http://www.acronymgeek.com/SPPR (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPPR, http://www.acronymgeek.com/SPPR (optional description here) (as of Feb. 11, 2012, 21:36). |
| AMA | SPPR. Acronym Geek. February 11, 2012, 21:36. Available at: http://www.acronymgeek.com/SPPR. Accessed February 11, 2012, 21:36. |