| APA | PLUD. (2012, February 16). In Acronym Geek. Retrieved 08:21, February 16, 2012, from http://www.acronymgeek.com/PLUD |
| MLA | "PLUD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PLUD>. |
| MHRA | 'PLUD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PLUD> [accessed 16 February 2012] |
| Chicago | "PLUD", http://www.acronymgeek.com/PLUD (accessed February 16, 2012). |
| CBE/CSE | PLUD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PLUD. |
| Bluebook | PLUD, http://www.acronymgeek.com/PLUD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PLUD, http://www.acronymgeek.com/PLUD (optional description here) (as of Feb. 16, 2012, 08:21). |
| AMA | PLUD. Acronym Geek. February 16, 2012, 08:21. Available at: http://www.acronymgeek.com/PLUD. Accessed February 16, 2012, 08:21. |