| APA | PIH. (2012, February 10). In Acronym Geek. Retrieved 07:24, February 10, 2012, from http://www.acronymgeek.com/PIH |
| MLA | "PIH." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/PIH>. |
| MHRA | 'PIH', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/PIH> [accessed 10 February 2012] |
| Chicago | "PIH", http://www.acronymgeek.com/PIH (accessed February 10, 2012). |
| CBE/CSE | PIH [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/PIH. |
| Bluebook | PIH, http://www.acronymgeek.com/PIH (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PIH, http://www.acronymgeek.com/PIH (optional description here) (as of Feb. 10, 2012, 07:24). |
| AMA | PIH. Acronym Geek. February 10, 2012, 07:24. Available at: http://www.acronymgeek.com/PIH. Accessed February 10, 2012, 07:24. |