| APA | HPLA. (2012, February 15). In Acronym Geek. Retrieved 07:30, February 15, 2012, from http://www.acronymgeek.com/HPLA |
| MLA | "HPLA." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HPLA>. |
| MHRA | 'HPLA', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HPLA> [accessed 15 February 2012] |
| Chicago | "HPLA", http://www.acronymgeek.com/HPLA (accessed February 15, 2012). |
| CBE/CSE | HPLA [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HPLA. |
| Bluebook | HPLA, http://www.acronymgeek.com/HPLA (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HPLA, http://www.acronymgeek.com/HPLA (optional description here) (as of Feb. 15, 2012, 07:30). |
| AMA | HPLA. Acronym Geek. February 15, 2012, 07:30. Available at: http://www.acronymgeek.com/HPLA. Accessed February 15, 2012, 07:30. |