| APA | E123. (2012, February 12). In Acronym Geek. Retrieved 01:31, February 12, 2012, from http://www.acronymgeek.com/E123 |
| MLA | "E123." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/E123>. |
| MHRA | 'E123', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/E123> [accessed 12 February 2012] |
| Chicago | "E123", http://www.acronymgeek.com/E123 (accessed February 12, 2012). |
| CBE/CSE | E123 [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/E123. |
| Bluebook | E123, http://www.acronymgeek.com/E123 (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, E123, http://www.acronymgeek.com/E123 (optional description here) (as of Feb. 12, 2012, 01:31). |
| AMA | E123. Acronym Geek. February 12, 2012, 01:31. Available at: http://www.acronymgeek.com/E123. Accessed February 12, 2012, 01:31. |