| APA | SPPY. (2012, February 15). In Acronym Geek. Retrieved 23:43, February 15, 2012, from http://www.acronymgeek.com/SPPY |
| MLA | "SPPY." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SPPY>. |
| MHRA | 'SPPY', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SPPY> [accessed 15 February 2012] |
| Chicago | "SPPY", http://www.acronymgeek.com/SPPY (accessed February 15, 2012). |
| CBE/CSE | SPPY [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SPPY. |
| Bluebook | SPPY, http://www.acronymgeek.com/SPPY (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPPY, http://www.acronymgeek.com/SPPY (optional description here) (as of Feb. 15, 2012, 23:43). |
| AMA | SPPY. Acronym Geek. February 15, 2012, 23:43. Available at: http://www.acronymgeek.com/SPPY. Accessed February 15, 2012, 23:43. |