| APA | SPEL. (2012, February 15). In Acronym Geek. Retrieved 20:53, February 15, 2012, from http://www.acronymgeek.com/SPEL |
| MLA | "SPEL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SPEL>. |
| MHRA | 'SPEL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SPEL> [accessed 15 February 2012] |
| Chicago | "SPEL", http://www.acronymgeek.com/SPEL (accessed February 15, 2012). |
| CBE/CSE | SPEL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SPEL. |
| Bluebook | SPEL, http://www.acronymgeek.com/SPEL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPEL, http://www.acronymgeek.com/SPEL (optional description here) (as of Feb. 15, 2012, 20:53). |
| AMA | SPEL. Acronym Geek. February 15, 2012, 20:53. Available at: http://www.acronymgeek.com/SPEL. Accessed February 15, 2012, 20:53. |