| APA | P/D. (2012, February 10). In Acronym Geek. Retrieved 09:25, February 10, 2012, from http://www.acronymgeek.com/P/D |
| MLA | "P/D." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/P/D>. |
| MHRA | 'P/D', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/P/D> [accessed 10 February 2012] |
| Chicago | "P/D", http://www.acronymgeek.com/P/D (accessed February 10, 2012). |
| CBE/CSE | P/D [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/P/D. |
| Bluebook | P/D, http://www.acronymgeek.com/P/D (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, P/D, http://www.acronymgeek.com/P/D (optional description here) (as of Feb. 10, 2012, 09:25). |
| AMA | P/D. Acronym Geek. February 10, 2012, 09:25. Available at: http://www.acronymgeek.com/P/D. Accessed February 10, 2012, 09:25. |