| Style | Reference Text |
|---|
| APA | E4. (2010, February 10). In Acronym Geek. Retrieved 05:56, February 10, 2010, from http://www.acronymgeek.com/E4 |
| MLA | "E4." Acronym Geek. 10 Feb 2010, 05:56. Acronym Geek. 10 Feb 2010 <http://www.acronymgeek.com/E4>. |
| MHRA | 'E4', Acronym Geek, 10 February 2010, 05:56, <http://www.acronymgeek.com/E4> [accessed 10 February 2010] |
| Chicago | "E4," http://www.acronymgeek.com/E4 (accessed February 10, 2010). |
| CBE/CSE | E4 [Internet]. Acronym Geek; 2010 Feb 10, 05:56 [cited 2010 Feb 10]. Available from: http://www.acronymgeek.com/E4. |
| Bluebook | E4, http://www.acronymgeek.com/E4 (last visited February 10, 2010). |
| Bluebook: Harvard JOLT | See Acronym Geek, E4, http://www.acronymgeek.com/E4 (optional description here) (as of Feb. 10, 2010, 05:56). |
| AMA | E4. Acronym Geek. February 10, 2010, 05:56. Available at: http://www.acronymgeek.com/E4. Accessed February 10, 2010. |