| APA | SPPDG. (2012, February 10). In Acronym Geek. Retrieved 09:16, February 10, 2012, from http://www.acronymgeek.com/SPPDG |
| MLA | "SPPDG." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/SPPDG>. |
| MHRA | 'SPPDG', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/SPPDG> [accessed 10 February 2012] |
| Chicago | "SPPDG", http://www.acronymgeek.com/SPPDG (accessed February 10, 2012). |
| CBE/CSE | SPPDG [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/SPPDG. |
| Bluebook | SPPDG, http://www.acronymgeek.com/SPPDG (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPPDG, http://www.acronymgeek.com/SPPDG (optional description here) (as of Feb. 10, 2012, 09:16). |
| AMA | SPPDG. Acronym Geek. February 10, 2012, 09:16. Available at: http://www.acronymgeek.com/SPPDG. Accessed February 10, 2012, 09:16. |