| APA | E50. (2012, February 12). In Acronym Geek. Retrieved 06:59, February 12, 2012, from http://www.acronymgeek.com/E50 |
| MLA | "E50." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/E50>. |
| MHRA | 'E50', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/E50> [accessed 12 February 2012] |
| Chicago | "E50", http://www.acronymgeek.com/E50 (accessed February 12, 2012). |
| CBE/CSE | E50 [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/E50. |
| Bluebook | E50, http://www.acronymgeek.com/E50 (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, E50, http://www.acronymgeek.com/E50 (optional description here) (as of Feb. 12, 2012, 06:59). |
| AMA | E50. Acronym Geek. February 12, 2012, 06:59. Available at: http://www.acronymgeek.com/E50. Accessed February 12, 2012, 06:59. |