| APA | 911. (2012, February 13). In Acronym Geek. Retrieved 21:28, February 13, 2012, from http://www.acronymgeek.com/911 |
| MLA | "911." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/911>. |
| MHRA | '911', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/911> [accessed 13 February 2012] |
| Chicago | "911", http://www.acronymgeek.com/911 (accessed February 13, 2012). |
| CBE/CSE | 911 [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/911. |
| Bluebook | 911, http://www.acronymgeek.com/911 (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 911, http://www.acronymgeek.com/911 (optional description here) (as of Feb. 13, 2012, 21:28). |
| AMA | 911. Acronym Geek. February 13, 2012, 21:28. Available at: http://www.acronymgeek.com/911. Accessed February 13, 2012, 21:28. |