| Style | Reference Text |
|---|
| APA | E4. (2009, November 23). In All Acronyms. Retrieved 10:27, November 23, 2009, from http://www.all-acronyms.com/E4 |
| MLA | "E4." All Acronyms. 23 Nov 2009, 10:27. All Acronyms. 23 Nov 2009 <http://www.all-acronyms.com/E4>. |
| MHRA | 'E4', All Acronyms, 23 November 2009, 10:27, <http://www.all-acronyms.com/E4> [accessed 23 November 2009] |
| Chicago | "E4," http://www.all-acronyms.com/E4 (accessed November 23, 2009). |
| CBE/CSE | E4 [Internet]. All Acronyms; 2009 Nov 23, 10:27 [cited 2009 Nov 23]. Available from: http://www.all-acronyms.com/E4. |
| Bluebook | E4, http://www.all-acronyms.com/E4 (last visited November 23, 2009). |
| Bluebook: Harvard JOLT | See All Acronyms, E4, http://www.all-acronyms.com/E4 (optional description here) (as of Nov. 23, 2009, 10:27). |
| AMA | E4. All Acronyms. November 23, 2009, 10:27. Available at: http://www.all-acronyms.com/E4. Accessed November 23, 2009. |
Echelon 4