| APA | SPECTRE. (2012, February 12). In Acronym Geek. Retrieved 09:29, February 12, 2012, from http://www.acronymgeek.com/SPECTRE |
| MLA | "SPECTRE." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/SPECTRE>. |
| MHRA | 'SPECTRE', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/SPECTRE> [accessed 12 February 2012] |
| Chicago | "SPECTRE", http://www.acronymgeek.com/SPECTRE (accessed February 12, 2012). |
| CBE/CSE | SPECTRE [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/SPECTRE. |
| Bluebook | SPECTRE, http://www.acronymgeek.com/SPECTRE (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPECTRE, http://www.acronymgeek.com/SPECTRE (optional description here) (as of Feb. 12, 2012, 09:29). |
| AMA | SPECTRE. Acronym Geek. February 12, 2012, 09:29. Available at: http://www.acronymgeek.com/SPECTRE. Accessed February 12, 2012, 09:29. |