| APA | PKIL. (2012, February 13). In Acronym Geek. Retrieved 23:59, February 13, 2012, from http://www.acronymgeek.com/PKIL |
| MLA | "PKIL." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/PKIL>. |
| MHRA | 'PKIL', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/PKIL> [accessed 13 February 2012] |
| Chicago | "PKIL", http://www.acronymgeek.com/PKIL (accessed February 13, 2012). |
| CBE/CSE | PKIL [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/PKIL. |
| Bluebook | PKIL, http://www.acronymgeek.com/PKIL (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PKIL, http://www.acronymgeek.com/PKIL (optional description here) (as of Feb. 13, 2012, 23:59). |
| AMA | PKIL. Acronym Geek. February 13, 2012, 23:59. Available at: http://www.acronymgeek.com/PKIL. Accessed February 13, 2012, 23:59. |