| APA | PPL. (2012, February 14). In Acronym Geek. Retrieved 11:53, February 14, 2012, from http://www.acronymgeek.com/PPL |
| MLA | "PPL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PPL>. |
| MHRA | 'PPL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PPL> [accessed 14 February 2012] |
| Chicago | "PPL", http://www.acronymgeek.com/PPL (accessed February 14, 2012). |
| CBE/CSE | PPL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PPL. |
| Bluebook | PPL, http://www.acronymgeek.com/PPL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PPL, http://www.acronymgeek.com/PPL (optional description here) (as of Feb. 14, 2012, 11:53). |
| AMA | PPL. Acronym Geek. February 14, 2012, 11:53. Available at: http://www.acronymgeek.com/PPL. Accessed February 14, 2012, 11:53. |