| APA | HLES. (2012, February 15). In Acronym Geek. Retrieved 18:18, February 15, 2012, from http://www.acronymgeek.com/HLES |
| MLA | "HLES." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HLES>. |
| MHRA | 'HLES', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HLES> [accessed 15 February 2012] |
| Chicago | "HLES", http://www.acronymgeek.com/HLES (accessed February 15, 2012). |
| CBE/CSE | HLES [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HLES. |
| Bluebook | HLES, http://www.acronymgeek.com/HLES (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLES, http://www.acronymgeek.com/HLES (optional description here) (as of Feb. 15, 2012, 18:18). |
| AMA | HLES. Acronym Geek. February 15, 2012, 18:18. Available at: http://www.acronymgeek.com/HLES. Accessed February 15, 2012, 18:18. |