| APA | RFEO. (2012, February 14). In Acronym Geek. Retrieved 14:28, February 14, 2012, from http://www.acronymgeek.com/RFEO |
| MLA | "RFEO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/RFEO>. |
| MHRA | 'RFEO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/RFEO> [accessed 14 February 2012] |
| Chicago | "RFEO", http://www.acronymgeek.com/RFEO (accessed February 14, 2012). |
| CBE/CSE | RFEO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/RFEO. |
| Bluebook | RFEO, http://www.acronymgeek.com/RFEO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, RFEO, http://www.acronymgeek.com/RFEO (optional description here) (as of Feb. 14, 2012, 14:28). |
| AMA | RFEO. Acronym Geek. February 14, 2012, 14:28. Available at: http://www.acronymgeek.com/RFEO. Accessed February 14, 2012, 14:28. |