| APA | HPSAS. (2012, February 10). In Acronym Geek. Retrieved 13:17, February 10, 2012, from http://www.acronymgeek.com/HPSAS |
| MLA | "HPSAS." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/HPSAS>. |
| MHRA | 'HPSAS', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/HPSAS> [accessed 10 February 2012] |
| Chicago | "HPSAS", http://www.acronymgeek.com/HPSAS (accessed February 10, 2012). |
| CBE/CSE | HPSAS [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/HPSAS. |
| Bluebook | HPSAS, http://www.acronymgeek.com/HPSAS (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HPSAS, http://www.acronymgeek.com/HPSAS (optional description here) (as of Feb. 10, 2012, 13:17). |
| AMA | HPSAS. Acronym Geek. February 10, 2012, 13:17. Available at: http://www.acronymgeek.com/HPSAS. Accessed February 10, 2012, 13:17. |