| APA | HAPV. (2012, February 14). In Acronym Geek. Retrieved 14:25, February 14, 2012, from http://www.acronymgeek.com/HAPV |
| MLA | "HAPV." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HAPV>. |
| MHRA | 'HAPV', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HAPV> [accessed 14 February 2012] |
| Chicago | "HAPV", http://www.acronymgeek.com/HAPV (accessed February 14, 2012). |
| CBE/CSE | HAPV [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HAPV. |
| Bluebook | HAPV, http://www.acronymgeek.com/HAPV (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAPV, http://www.acronymgeek.com/HAPV (optional description here) (as of Feb. 14, 2012, 14:25). |
| AMA | HAPV. Acronym Geek. February 14, 2012, 14:25. Available at: http://www.acronymgeek.com/HAPV. Accessed February 14, 2012, 14:25. |