| APA | PDTH. (2012, February 15). In Acronym Geek. Retrieved 10:41, February 15, 2012, from http://www.acronymgeek.com/PDTH |
| MLA | "PDTH." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PDTH>. |
| MHRA | 'PDTH', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PDTH> [accessed 15 February 2012] |
| Chicago | "PDTH", http://www.acronymgeek.com/PDTH (accessed February 15, 2012). |
| CBE/CSE | PDTH [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PDTH. |
| Bluebook | PDTH, http://www.acronymgeek.com/PDTH (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDTH, http://www.acronymgeek.com/PDTH (optional description here) (as of Feb. 15, 2012, 10:41). |
| AMA | PDTH. Acronym Geek. February 15, 2012, 10:41. Available at: http://www.acronymgeek.com/PDTH. Accessed February 15, 2012, 10:41. |