| APA | PPDT. (2012, February 15). In Acronym Geek. Retrieved 05:56, February 15, 2012, from http://www.acronymgeek.com/PPDT |
| MLA | "PPDT." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PPDT>. |
| MHRA | 'PPDT', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PPDT> [accessed 15 February 2012] |
| Chicago | "PPDT", http://www.acronymgeek.com/PPDT (accessed February 15, 2012). |
| CBE/CSE | PPDT [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PPDT. |
| Bluebook | PPDT, http://www.acronymgeek.com/PPDT (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PPDT, http://www.acronymgeek.com/PPDT (optional description here) (as of Feb. 15, 2012, 05:56). |
| AMA | PPDT. Acronym Geek. February 15, 2012, 05:56. Available at: http://www.acronymgeek.com/PPDT. Accessed February 15, 2012, 05:56. |