| APA | SPPL. (2012, February 12). In Acronym Geek. Retrieved 07:12, February 12, 2012, from http://www.acronymgeek.com/SPPL |
| MLA | "SPPL." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/SPPL>. |
| MHRA | 'SPPL', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/SPPL> [accessed 12 February 2012] |
| Chicago | "SPPL", http://www.acronymgeek.com/SPPL (accessed February 12, 2012). |
| CBE/CSE | SPPL [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/SPPL. |
| Bluebook | SPPL, http://www.acronymgeek.com/SPPL (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPPL, http://www.acronymgeek.com/SPPL (optional description here) (as of Feb. 12, 2012, 07:12). |
| AMA | SPPL. Acronym Geek. February 12, 2012, 07:12. Available at: http://www.acronymgeek.com/SPPL. Accessed February 12, 2012, 07:12. |