| APA | ERYF. (2012, February 16). In Acronym Geek. Retrieved 04:00, February 16, 2012, from http://www.acronymgeek.com/ERYF |
| MLA | "ERYF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ERYF>. |
| MHRA | 'ERYF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ERYF> [accessed 16 February 2012] |
| Chicago | "ERYF", http://www.acronymgeek.com/ERYF (accessed February 16, 2012). |
| CBE/CSE | ERYF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ERYF. |
| Bluebook | ERYF, http://www.acronymgeek.com/ERYF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ERYF, http://www.acronymgeek.com/ERYF (optional description here) (as of Feb. 16, 2012, 04:00). |
| AMA | ERYF. Acronym Geek. February 16, 2012, 04:00. Available at: http://www.acronymgeek.com/ERYF. Accessed February 16, 2012, 04:00. |