| APA | HLA. (2012, February 13). In Acronym Geek. Retrieved 21:46, February 13, 2012, from http://www.acronymgeek.com/HLA |
| MLA | "HLA." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HLA>. |
| MHRA | 'HLA', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HLA> [accessed 13 February 2012] |
| Chicago | "HLA", http://www.acronymgeek.com/HLA (accessed February 13, 2012). |
| CBE/CSE | HLA [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HLA. |
| Bluebook | HLA, http://www.acronymgeek.com/HLA (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLA, http://www.acronymgeek.com/HLA (optional description here) (as of Feb. 13, 2012, 21:46). |
| AMA | HLA. Acronym Geek. February 13, 2012, 21:46. Available at: http://www.acronymgeek.com/HLA. Accessed February 13, 2012, 21:46. |