| APA | HLP. (2012, February 14). In Acronym Geek. Retrieved 04:23, February 14, 2012, from http://www.acronymgeek.com/HLP |
| MLA | "HLP." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HLP>. |
| MHRA | 'HLP', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HLP> [accessed 14 February 2012] |
| Chicago | "HLP", http://www.acronymgeek.com/HLP (accessed February 14, 2012). |
| CBE/CSE | HLP [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HLP. |
| Bluebook | HLP, http://www.acronymgeek.com/HLP (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLP, http://www.acronymgeek.com/HLP (optional description here) (as of Feb. 14, 2012, 04:23). |
| AMA | HLP. Acronym Geek. February 14, 2012, 04:23. Available at: http://www.acronymgeek.com/HLP. Accessed February 14, 2012, 04:23. |