| APA | P4PD. (2012, February 17). In Acronym Geek. Retrieved 05:35, February 17, 2012, from http://www.acronymgeek.com/P4PD |
| MLA | "P4PD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/P4PD>. |
| MHRA | 'P4PD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/P4PD> [accessed 17 February 2012] |
| Chicago | "P4PD", http://www.acronymgeek.com/P4PD (accessed February 17, 2012). |
| CBE/CSE | P4PD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/P4PD. |
| Bluebook | P4PD, http://www.acronymgeek.com/P4PD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, P4PD, http://www.acronymgeek.com/P4PD (optional description here) (as of Feb. 17, 2012, 05:35). |
| AMA | P4PD. Acronym Geek. February 17, 2012, 05:35. Available at: http://www.acronymgeek.com/P4PD. Accessed February 17, 2012, 05:35. |