| APA | HAPL. (2012, February 16). In Acronym Geek. Retrieved 08:46, February 16, 2012, from http://www.acronymgeek.com/HAPL |
| MLA | "HAPL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HAPL>. |
| MHRA | 'HAPL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HAPL> [accessed 16 February 2012] |
| Chicago | "HAPL", http://www.acronymgeek.com/HAPL (accessed February 16, 2012). |
| CBE/CSE | HAPL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HAPL. |
| Bluebook | HAPL, http://www.acronymgeek.com/HAPL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAPL, http://www.acronymgeek.com/HAPL (optional description here) (as of Feb. 16, 2012, 08:46). |
| AMA | HAPL. Acronym Geek. February 16, 2012, 08:46. Available at: http://www.acronymgeek.com/HAPL. Accessed February 16, 2012, 08:46. |