| APA | HLR. (2012, February 13). In Acronym Geek. Retrieved 20:56, February 13, 2012, from http://www.acronymgeek.com/HLR |
| MLA | "HLR." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HLR>. |
| MHRA | 'HLR', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HLR> [accessed 13 February 2012] |
| Chicago | "HLR", http://www.acronymgeek.com/HLR (accessed February 13, 2012). |
| CBE/CSE | HLR [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HLR. |
| Bluebook | HLR, http://www.acronymgeek.com/HLR (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLR, http://www.acronymgeek.com/HLR (optional description here) (as of Feb. 13, 2012, 20:56). |
| AMA | HLR. Acronym Geek. February 13, 2012, 20:56. Available at: http://www.acronymgeek.com/HLR. Accessed February 13, 2012, 20:56. |