| APA | HPS. (2012, February 14). In Acronym Geek. Retrieved 07:01, February 14, 2012, from http://www.acronymgeek.com/HPS |
| MLA | "HPS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HPS>. |
| MHRA | 'HPS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HPS> [accessed 14 February 2012] |
| Chicago | "HPS", http://www.acronymgeek.com/HPS (accessed February 14, 2012). |
| CBE/CSE | HPS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HPS. |
| Bluebook | HPS, http://www.acronymgeek.com/HPS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HPS, http://www.acronymgeek.com/HPS (optional description here) (as of Feb. 14, 2012, 07:01). |
| AMA | HPS. Acronym Geek. February 14, 2012, 07:01. Available at: http://www.acronymgeek.com/HPS. Accessed February 14, 2012, 07:01. |