| APA | HLFD. (2012, February 17). In Acronym Geek. Retrieved 02:52, February 17, 2012, from http://www.acronymgeek.com/HLFD |
| MLA | "HLFD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HLFD>. |
| MHRA | 'HLFD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HLFD> [accessed 17 February 2012] |
| Chicago | "HLFD", http://www.acronymgeek.com/HLFD (accessed February 17, 2012). |
| CBE/CSE | HLFD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HLFD. |
| Bluebook | HLFD, http://www.acronymgeek.com/HLFD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLFD, http://www.acronymgeek.com/HLFD (optional description here) (as of Feb. 17, 2012, 02:52). |
| AMA | HLFD. Acronym Geek. February 17, 2012, 02:52. Available at: http://www.acronymgeek.com/HLFD. Accessed February 17, 2012, 02:52. |