| APA | E5. (2012, February 10). In Acronym Geek. Retrieved 09:39, February 10, 2012, from http://www.acronymgeek.com/E5 |
| MLA | "E5." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/E5>. |
| MHRA | 'E5', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/E5> [accessed 10 February 2012] |
| Chicago | "E5", http://www.acronymgeek.com/E5 (accessed February 10, 2012). |
| CBE/CSE | E5 [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/E5. |
| Bluebook | E5, http://www.acronymgeek.com/E5 (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, E5, http://www.acronymgeek.com/E5 (optional description here) (as of Feb. 10, 2012, 09:39). |
| AMA | E5. Acronym Geek. February 10, 2012, 09:39. Available at: http://www.acronymgeek.com/E5. Accessed February 10, 2012, 09:39. |