| APA | FEYO. (2012, February 14). In Acronym Geek. Retrieved 08:43, February 14, 2012, from http://www.acronymgeek.com/FEYO |
| MLA | "FEYO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/FEYO>. |
| MHRA | 'FEYO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/FEYO> [accessed 14 February 2012] |
| Chicago | "FEYO", http://www.acronymgeek.com/FEYO (accessed February 14, 2012). |
| CBE/CSE | FEYO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/FEYO. |
| Bluebook | FEYO, http://www.acronymgeek.com/FEYO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FEYO, http://www.acronymgeek.com/FEYO (optional description here) (as of Feb. 14, 2012, 08:43). |
| AMA | FEYO. Acronym Geek. February 14, 2012, 08:43. Available at: http://www.acronymgeek.com/FEYO. Accessed February 14, 2012, 08:43. |