| APA | PDLU. (2012, February 14). In Acronym Geek. Retrieved 18:13, February 14, 2012, from http://www.acronymgeek.com/PDLU |
| MLA | "PDLU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PDLU>. |
| MHRA | 'PDLU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PDLU> [accessed 14 February 2012] |
| Chicago | "PDLU", http://www.acronymgeek.com/PDLU (accessed February 14, 2012). |
| CBE/CSE | PDLU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PDLU. |
| Bluebook | PDLU, http://www.acronymgeek.com/PDLU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDLU, http://www.acronymgeek.com/PDLU (optional description here) (as of Feb. 14, 2012, 18:13). |
| AMA | PDLU. Acronym Geek. February 14, 2012, 18:13. Available at: http://www.acronymgeek.com/PDLU. Accessed February 14, 2012, 18:13. |