| APA | ER-168. (2012, February 10). In Acronym Geek. Retrieved 09:30, February 10, 2012, from http://www.acronymgeek.com/ER-168 |
| MLA | "ER-168." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/ER-168>. |
| MHRA | 'ER-168', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/ER-168> [accessed 10 February 2012] |
| Chicago | "ER-168", http://www.acronymgeek.com/ER-168 (accessed February 10, 2012). |
| CBE/CSE | ER-168 [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/ER-168. |
| Bluebook | ER-168, http://www.acronymgeek.com/ER-168 (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ER-168, http://www.acronymgeek.com/ER-168 (optional description here) (as of Feb. 10, 2012, 09:30). |
| AMA | ER-168. Acronym Geek. February 10, 2012, 09:30. Available at: http://www.acronymgeek.com/ER-168. Accessed February 10, 2012, 09:30. |