| APA | SPDL. (2012, February 16). In Acronym Geek. Retrieved 05:45, February 16, 2012, from http://www.acronymgeek.com/SPDL |
| MLA | "SPDL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SPDL>. |
| MHRA | 'SPDL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SPDL> [accessed 16 February 2012] |
| Chicago | "SPDL", http://www.acronymgeek.com/SPDL (accessed February 16, 2012). |
| CBE/CSE | SPDL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SPDL. |
| Bluebook | SPDL, http://www.acronymgeek.com/SPDL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPDL, http://www.acronymgeek.com/SPDL (optional description here) (as of Feb. 16, 2012, 05:45). |
| AMA | SPDL. Acronym Geek. February 16, 2012, 05:45. Available at: http://www.acronymgeek.com/SPDL. Accessed February 16, 2012, 05:45. |