| APA | ERYS. (2012, February 15). In Acronym Geek. Retrieved 21:07, February 15, 2012, from http://www.acronymgeek.com/ERYS |
| MLA | "ERYS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ERYS>. |
| MHRA | 'ERYS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ERYS> [accessed 15 February 2012] |
| Chicago | "ERYS", http://www.acronymgeek.com/ERYS (accessed February 15, 2012). |
| CBE/CSE | ERYS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ERYS. |
| Bluebook | ERYS, http://www.acronymgeek.com/ERYS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ERYS, http://www.acronymgeek.com/ERYS (optional description here) (as of Feb. 15, 2012, 21:07). |
| AMA | ERYS. Acronym Geek. February 15, 2012, 21:07. Available at: http://www.acronymgeek.com/ERYS. Accessed February 15, 2012, 21:07. |