| APA | ER-166. (2012, February 12). In Acronym Geek. Retrieved 13:10, February 12, 2012, from http://www.acronymgeek.com/ER-166 |
| MLA | "ER-166." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/ER-166>. |
| MHRA | 'ER-166', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/ER-166> [accessed 12 February 2012] |
| Chicago | "ER-166", http://www.acronymgeek.com/ER-166 (accessed February 12, 2012). |
| CBE/CSE | ER-166 [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/ER-166. |
| Bluebook | ER-166, http://www.acronymgeek.com/ER-166 (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ER-166, http://www.acronymgeek.com/ER-166 (optional description here) (as of Feb. 12, 2012, 13:10). |
| AMA | ER-166. Acronym Geek. February 12, 2012, 13:10. Available at: http://www.acronymgeek.com/ER-166. Accessed February 12, 2012, 13:10. |