| APA | OYEF. (2012, February 15). In Acronym Geek. Retrieved 22:40, February 15, 2012, from http://www.acronymgeek.com/OYEF |
| MLA | "OYEF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OYEF>. |
| MHRA | 'OYEF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OYEF> [accessed 15 February 2012] |
| Chicago | "OYEF", http://www.acronymgeek.com/OYEF (accessed February 15, 2012). |
| CBE/CSE | OYEF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OYEF. |
| Bluebook | OYEF, http://www.acronymgeek.com/OYEF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OYEF, http://www.acronymgeek.com/OYEF (optional description here) (as of Feb. 15, 2012, 22:40). |
| AMA | OYEF. Acronym Geek. February 15, 2012, 22:40. Available at: http://www.acronymgeek.com/OYEF. Accessed February 15, 2012, 22:40. |