| APA | PGND. (2012, February 16). In Acronym Geek. Retrieved 20:09, February 16, 2012, from http://www.acronymgeek.com/PGND |
| MLA | "PGND." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PGND>. |
| MHRA | 'PGND', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PGND> [accessed 16 February 2012] |
| Chicago | "PGND", http://www.acronymgeek.com/PGND (accessed February 16, 2012). |
| CBE/CSE | PGND [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PGND. |
| Bluebook | PGND, http://www.acronymgeek.com/PGND (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PGND, http://www.acronymgeek.com/PGND (optional description here) (as of Feb. 16, 2012, 20:09). |
| AMA | PGND. Acronym Geek. February 16, 2012, 20:09. Available at: http://www.acronymgeek.com/PGND. Accessed February 16, 2012, 20:09. |