| APA | ER(-). (2012, February 12). In Acronym Geek. Retrieved 13:42, February 12, 2012, from http://www.acronymgeek.com/ER(-) |
| MLA | "ER(-)." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/ER(-)>. |
| MHRA | 'ER(-)', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/ER(-)> [accessed 12 February 2012] |
| Chicago | "ER(-)", http://www.acronymgeek.com/ER(-) (accessed February 12, 2012). |
| CBE/CSE | ER(-) [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/ER(-). |
| Bluebook | ER(-), http://www.acronymgeek.com/ER(-) (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ER(-), http://www.acronymgeek.com/ER(-) (optional description here) (as of Feb. 12, 2012, 13:42). |
| AMA | ER(-). Acronym Geek. February 12, 2012, 13:42. Available at: http://www.acronymgeek.com/ER(-). Accessed February 12, 2012, 13:42. |