| APA | EHFS. (2012, February 15). In Acronym Geek. Retrieved 21:00, February 15, 2012, from http://www.acronymgeek.com/EHFS |
| MLA | "EHFS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/EHFS>. |
| MHRA | 'EHFS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/EHFS> [accessed 15 February 2012] |
| Chicago | "EHFS", http://www.acronymgeek.com/EHFS (accessed February 15, 2012). |
| CBE/CSE | EHFS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/EHFS. |
| Bluebook | EHFS, http://www.acronymgeek.com/EHFS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EHFS, http://www.acronymgeek.com/EHFS (optional description here) (as of Feb. 15, 2012, 21:00). |
| AMA | EHFS. Acronym Geek. February 15, 2012, 21:00. Available at: http://www.acronymgeek.com/EHFS. Accessed February 15, 2012, 21:00. |