| APA | SPPD. (2012, February 10). In Acronym Geek. Retrieved 07:26, February 10, 2012, from http://www.acronymgeek.com/SPPD |
| MLA | "SPPD." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/SPPD>. |
| MHRA | 'SPPD', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/SPPD> [accessed 10 February 2012] |
| Chicago | "SPPD", http://www.acronymgeek.com/SPPD (accessed February 10, 2012). |
| CBE/CSE | SPPD [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/SPPD. |
| Bluebook | SPPD, http://www.acronymgeek.com/SPPD (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPPD, http://www.acronymgeek.com/SPPD (optional description here) (as of Feb. 10, 2012, 07:26). |
| AMA | SPPD. Acronym Geek. February 10, 2012, 07:26. Available at: http://www.acronymgeek.com/SPPD. Accessed February 10, 2012, 07:26. |