| APA | E. (2012, February 9). In Acronym Geek. Retrieved 09:02, February 9, 2012, from http://www.acronymgeek.com/E |
| MLA | "E." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/E>. |
| MHRA | 'E', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/E> [accessed 9 February 2012] |
| Chicago | "E", http://www.acronymgeek.com/E (accessed February 9, 2012). |
| CBE/CSE | E [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/E. |
| Bluebook | E, http://www.acronymgeek.com/E (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, E, http://www.acronymgeek.com/E (optional description here) (as of Feb. 9, 2012, 09:02). |
| AMA | E. Acronym Geek. February 9, 2012, 09:02. Available at: http://www.acronymgeek.com/E. Accessed February 9, 2012, 09:02. |