| APA | PDM. (2012, February 13). In Acronym Geek. Retrieved 23:16, February 13, 2012, from http://www.acronymgeek.com/PDM |
| MLA | "PDM." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/PDM>. |
| MHRA | 'PDM', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/PDM> [accessed 13 February 2012] |
| Chicago | "PDM", http://www.acronymgeek.com/PDM (accessed February 13, 2012). |
| CBE/CSE | PDM [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/PDM. |
| Bluebook | PDM, http://www.acronymgeek.com/PDM (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDM, http://www.acronymgeek.com/PDM (optional description here) (as of Feb. 13, 2012, 23:16). |
| AMA | PDM. Acronym Geek. February 13, 2012, 23:16. Available at: http://www.acronymgeek.com/PDM. Accessed February 13, 2012, 23:16. |