| APA | HAPR. (2012, February 16). In Acronym Geek. Retrieved 22:00, February 16, 2012, from http://www.acronymgeek.com/HAPR |
| MLA | "HAPR." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HAPR>. |
| MHRA | 'HAPR', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HAPR> [accessed 16 February 2012] |
| Chicago | "HAPR", http://www.acronymgeek.com/HAPR (accessed February 16, 2012). |
| CBE/CSE | HAPR [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HAPR. |
| Bluebook | HAPR, http://www.acronymgeek.com/HAPR (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAPR, http://www.acronymgeek.com/HAPR (optional description here) (as of Feb. 16, 2012, 22:00). |
| AMA | HAPR. Acronym Geek. February 16, 2012, 22:00. Available at: http://www.acronymgeek.com/HAPR. Accessed February 16, 2012, 22:00. |