| APA | FIEO. (2012, February 16). In Acronym Geek. Retrieved 20:34, February 16, 2012, from http://www.acronymgeek.com/FIEO |
| MLA | "FIEO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/FIEO>. |
| MHRA | 'FIEO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/FIEO> [accessed 16 February 2012] |
| Chicago | "FIEO", http://www.acronymgeek.com/FIEO (accessed February 16, 2012). |
| CBE/CSE | FIEO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/FIEO. |
| Bluebook | FIEO, http://www.acronymgeek.com/FIEO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FIEO, http://www.acronymgeek.com/FIEO (optional description here) (as of Feb. 16, 2012, 20:34). |
| AMA | FIEO. Acronym Geek. February 16, 2012, 20:34. Available at: http://www.acronymgeek.com/FIEO. Accessed February 16, 2012, 20:34. |