| APA | EXT. (2012, February 9). In Acronym Geek. Retrieved 21:05, February 9, 2012, from http://www.acronymgeek.com/EXT |
| MLA | "EXT." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/EXT>. |
| MHRA | 'EXT', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/EXT> [accessed 9 February 2012] |
| Chicago | "EXT", http://www.acronymgeek.com/EXT (accessed February 9, 2012). |
| CBE/CSE | EXT [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/EXT. |
| Bluebook | EXT, http://www.acronymgeek.com/EXT (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EXT, http://www.acronymgeek.com/EXT (optional description here) (as of Feb. 9, 2012, 21:05). |
| AMA | EXT. Acronym Geek. February 9, 2012, 21:05. Available at: http://www.acronymgeek.com/EXT. Accessed February 9, 2012, 21:05. |