| APA | EYFO. (2012, February 16). In Acronym Geek. Retrieved 03:39, February 16, 2012, from http://www.acronymgeek.com/EYFO |
| MLA | "EYFO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/EYFO>. |
| MHRA | 'EYFO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/EYFO> [accessed 16 February 2012] |
| Chicago | "EYFO", http://www.acronymgeek.com/EYFO (accessed February 16, 2012). |
| CBE/CSE | EYFO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/EYFO. |
| Bluebook | EYFO, http://www.acronymgeek.com/EYFO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EYFO, http://www.acronymgeek.com/EYFO (optional description here) (as of Feb. 16, 2012, 03:39). |
| AMA | EYFO. Acronym Geek. February 16, 2012, 03:39. Available at: http://www.acronymgeek.com/EYFO. Accessed February 16, 2012, 03:39. |