| APA | PDK. (2012, February 14). In Acronym Geek. Retrieved 07:25, February 14, 2012, from http://www.acronymgeek.com/PDK |
| MLA | "PDK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PDK>. |
| MHRA | 'PDK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PDK> [accessed 14 February 2012] |
| Chicago | "PDK", http://www.acronymgeek.com/PDK (accessed February 14, 2012). |
| CBE/CSE | PDK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PDK. |
| Bluebook | PDK, http://www.acronymgeek.com/PDK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDK, http://www.acronymgeek.com/PDK (optional description here) (as of Feb. 14, 2012, 07:25). |
| AMA | PDK. Acronym Geek. February 14, 2012, 07:25. Available at: http://www.acronymgeek.com/PDK. Accessed February 14, 2012, 07:25. |