| APA | ECFO. (2012, February 16). In Acronym Geek. Retrieved 07:50, February 16, 2012, from http://www.acronymgeek.com/ECFO |
| MLA | "ECFO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ECFO>. |
| MHRA | 'ECFO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ECFO> [accessed 16 February 2012] |
| Chicago | "ECFO", http://www.acronymgeek.com/ECFO (accessed February 16, 2012). |
| CBE/CSE | ECFO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ECFO. |
| Bluebook | ECFO, http://www.acronymgeek.com/ECFO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ECFO, http://www.acronymgeek.com/ECFO (optional description here) (as of Feb. 16, 2012, 07:50). |
| AMA | ECFO. Acronym Geek. February 16, 2012, 07:50. Available at: http://www.acronymgeek.com/ECFO. Accessed February 16, 2012, 07:50. |