| APA | PPR. (2012, February 14). In Acronym Geek. Retrieved 04:11, February 14, 2012, from http://www.acronymgeek.com/PPR |
| MLA | "PPR." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PPR>. |
| MHRA | 'PPR', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PPR> [accessed 14 February 2012] |
| Chicago | "PPR", http://www.acronymgeek.com/PPR (accessed February 14, 2012). |
| CBE/CSE | PPR [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PPR. |
| Bluebook | PPR, http://www.acronymgeek.com/PPR (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PPR, http://www.acronymgeek.com/PPR (optional description here) (as of Feb. 14, 2012, 04:11). |
| AMA | PPR. Acronym Geek. February 14, 2012, 04:11. Available at: http://www.acronymgeek.com/PPR. Accessed February 14, 2012, 04:11. |