| APA | EFHD. (2012, February 15). In Acronym Geek. Retrieved 23:53, February 15, 2012, from http://www.acronymgeek.com/EFHD |
| MLA | "EFHD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/EFHD>. |
| MHRA | 'EFHD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/EFHD> [accessed 15 February 2012] |
| Chicago | "EFHD", http://www.acronymgeek.com/EFHD (accessed February 15, 2012). |
| CBE/CSE | EFHD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/EFHD. |
| Bluebook | EFHD, http://www.acronymgeek.com/EFHD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EFHD, http://www.acronymgeek.com/EFHD (optional description here) (as of Feb. 15, 2012, 23:53). |
| AMA | EFHD. Acronym Geek. February 15, 2012, 23:53. Available at: http://www.acronymgeek.com/EFHD. Accessed February 15, 2012, 23:53. |