| APA | PNDL. (2012, February 14). In Acronym Geek. Retrieved 14:03, February 14, 2012, from http://www.acronymgeek.com/PNDL |
| MLA | "PNDL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PNDL>. |
| MHRA | 'PNDL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PNDL> [accessed 14 February 2012] |
| Chicago | "PNDL", http://www.acronymgeek.com/PNDL (accessed February 14, 2012). |
| CBE/CSE | PNDL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PNDL. |
| Bluebook | PNDL, http://www.acronymgeek.com/PNDL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNDL, http://www.acronymgeek.com/PNDL (optional description here) (as of Feb. 14, 2012, 14:03). |
| AMA | PNDL. Acronym Geek. February 14, 2012, 14:03. Available at: http://www.acronymgeek.com/PNDL. Accessed February 14, 2012, 14:03. |