| APA | FEYS. (2012, February 16). In Acronym Geek. Retrieved 10:40, February 16, 2012, from http://www.acronymgeek.com/FEYS |
| MLA | "FEYS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/FEYS>. |
| MHRA | 'FEYS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/FEYS> [accessed 16 February 2012] |
| Chicago | "FEYS", http://www.acronymgeek.com/FEYS (accessed February 16, 2012). |
| CBE/CSE | FEYS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/FEYS. |
| Bluebook | FEYS, http://www.acronymgeek.com/FEYS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FEYS, http://www.acronymgeek.com/FEYS (optional description here) (as of Feb. 16, 2012, 10:40). |
| AMA | FEYS. Acronym Geek. February 16, 2012, 10:40. Available at: http://www.acronymgeek.com/FEYS. Accessed February 16, 2012, 10:40. |