| APA | P.P.. (2012, February 9). In Acronym Geek. Retrieved 21:13, February 9, 2012, from http://www.acronymgeek.com/P.P. |
| MLA | "P.P.." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/P.P.>. |
| MHRA | 'P.P.', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/P.P.> [accessed 9 February 2012] |
| Chicago | "P.P.", http://www.acronymgeek.com/P.P. (accessed February 9, 2012). |
| CBE/CSE | P.P. [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/P.P.. |
| Bluebook | P.P., http://www.acronymgeek.com/P.P. (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, P.P., http://www.acronymgeek.com/P.P. (optional description here) (as of Feb. 9, 2012, 21:13). |
| AMA | P.P.. Acronym Geek. February 9, 2012, 21:13. Available at: http://www.acronymgeek.com/P.P.. Accessed February 9, 2012, 21:13. |