| APA | PGNL. (2012, February 16). In Acronym Geek. Retrieved 20:26, February 16, 2012, from http://www.acronymgeek.com/PGNL |
| MLA | "PGNL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PGNL>. |
| MHRA | 'PGNL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PGNL> [accessed 16 February 2012] |
| Chicago | "PGNL", http://www.acronymgeek.com/PGNL (accessed February 16, 2012). |
| CBE/CSE | PGNL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PGNL. |
| Bluebook | PGNL, http://www.acronymgeek.com/PGNL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PGNL, http://www.acronymgeek.com/PGNL (optional description here) (as of Feb. 16, 2012, 20:26). |
| AMA | PGNL. Acronym Geek. February 16, 2012, 20:26. Available at: http://www.acronymgeek.com/PGNL. Accessed February 16, 2012, 20:26. |