| APA | PAI. (2012, February 9). In Acronym Geek. Retrieved 20:35, February 9, 2012, from http://www.acronymgeek.com/PAI |
| MLA | "PAI." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/PAI>. |
| MHRA | 'PAI', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/PAI> [accessed 9 February 2012] |
| Chicago | "PAI", http://www.acronymgeek.com/PAI (accessed February 9, 2012). |
| CBE/CSE | PAI [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/PAI. |
| Bluebook | PAI, http://www.acronymgeek.com/PAI (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PAI, http://www.acronymgeek.com/PAI (optional description here) (as of Feb. 9, 2012, 20:35). |
| AMA | PAI. Acronym Geek. February 9, 2012, 20:35. Available at: http://www.acronymgeek.com/PAI. Accessed February 9, 2012, 20:35. |