| APA | ESF. (2012, February 13). In Acronym Geek. Retrieved 23:44, February 13, 2012, from http://www.acronymgeek.com/ESF |
| MLA | "ESF." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ESF>. |
| MHRA | 'ESF', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ESF> [accessed 13 February 2012] |
| Chicago | "ESF", http://www.acronymgeek.com/ESF (accessed February 13, 2012). |
| CBE/CSE | ESF [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ESF. |
| Bluebook | ESF, http://www.acronymgeek.com/ESF (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ESF, http://www.acronymgeek.com/ESF (optional description here) (as of Feb. 13, 2012, 23:44). |
| AMA | ESF. Acronym Geek. February 13, 2012, 23:44. Available at: http://www.acronymgeek.com/ESF. Accessed February 13, 2012, 23:44. |