| APA | ERR. (2012, February 13). In Acronym Geek. Retrieved 20:55, February 13, 2012, from http://www.acronymgeek.com/ERR |
| MLA | "ERR." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ERR>. |
| MHRA | 'ERR', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ERR> [accessed 13 February 2012] |
| Chicago | "ERR", http://www.acronymgeek.com/ERR (accessed February 13, 2012). |
| CBE/CSE | ERR [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ERR. |
| Bluebook | ERR, http://www.acronymgeek.com/ERR (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ERR, http://www.acronymgeek.com/ERR (optional description here) (as of Feb. 13, 2012, 20:55). |
| AMA | ERR. Acronym Geek. February 13, 2012, 20:55. Available at: http://www.acronymgeek.com/ERR. Accessed February 13, 2012, 20:55. |