| APA | HLEF. (2012, February 16). In Acronym Geek. Retrieved 03:48, February 16, 2012, from http://www.acronymgeek.com/HLEF |
| MLA | "HLEF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HLEF>. |
| MHRA | 'HLEF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HLEF> [accessed 16 February 2012] |
| Chicago | "HLEF", http://www.acronymgeek.com/HLEF (accessed February 16, 2012). |
| CBE/CSE | HLEF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HLEF. |
| Bluebook | HLEF, http://www.acronymgeek.com/HLEF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLEF, http://www.acronymgeek.com/HLEF (optional description here) (as of Feb. 16, 2012, 03:48). |
| AMA | HLEF. Acronym Geek. February 16, 2012, 03:48. Available at: http://www.acronymgeek.com/HLEF. Accessed February 16, 2012, 03:48. |