| APA | HLM. (2012, February 14). In Acronym Geek. Retrieved 06:59, February 14, 2012, from http://www.acronymgeek.com/HLM |
| MLA | "HLM." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HLM>. |
| MHRA | 'HLM', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HLM> [accessed 14 February 2012] |
| Chicago | "HLM", http://www.acronymgeek.com/HLM (accessed February 14, 2012). |
| CBE/CSE | HLM [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HLM. |
| Bluebook | HLM, http://www.acronymgeek.com/HLM (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLM, http://www.acronymgeek.com/HLM (optional description here) (as of Feb. 14, 2012, 06:59). |
| AMA | HLM. Acronym Geek. February 14, 2012, 06:59. Available at: http://www.acronymgeek.com/HLM. Accessed February 14, 2012, 06:59. |