| APA | HLDE. (2012, February 15). In Acronym Geek. Retrieved 12:15, February 15, 2012, from http://www.acronymgeek.com/HLDE |
| MLA | "HLDE." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HLDE>. |
| MHRA | 'HLDE', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HLDE> [accessed 15 February 2012] |
| Chicago | "HLDE", http://www.acronymgeek.com/HLDE (accessed February 15, 2012). |
| CBE/CSE | HLDE [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HLDE. |
| Bluebook | HLDE, http://www.acronymgeek.com/HLDE (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLDE, http://www.acronymgeek.com/HLDE (optional description here) (as of Feb. 15, 2012, 12:15). |
| AMA | HLDE. Acronym Geek. February 15, 2012, 12:15. Available at: http://www.acronymgeek.com/HLDE. Accessed February 15, 2012, 12:15. |