| APA | SPAL. (2012, February 16). In Acronym Geek. Retrieved 22:09, February 16, 2012, from http://www.acronymgeek.com/SPAL |
| MLA | "SPAL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SPAL>. |
| MHRA | 'SPAL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SPAL> [accessed 16 February 2012] |
| Chicago | "SPAL", http://www.acronymgeek.com/SPAL (accessed February 16, 2012). |
| CBE/CSE | SPAL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SPAL. |
| Bluebook | SPAL, http://www.acronymgeek.com/SPAL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPAL, http://www.acronymgeek.com/SPAL (optional description here) (as of Feb. 16, 2012, 22:09). |
| AMA | SPAL. Acronym Geek. February 16, 2012, 22:09. Available at: http://www.acronymgeek.com/SPAL. Accessed February 16, 2012, 22:09. |