| APA | GPPD. (2012, February 17). In Acronym Geek. Retrieved 07:34, February 17, 2012, from http://www.acronymgeek.com/GPPD |
| MLA | "GPPD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/GPPD>. |
| MHRA | 'GPPD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/GPPD> [accessed 17 February 2012] |
| Chicago | "GPPD", http://www.acronymgeek.com/GPPD (accessed February 17, 2012). |
| CBE/CSE | GPPD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/GPPD. |
| Bluebook | GPPD, http://www.acronymgeek.com/GPPD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GPPD, http://www.acronymgeek.com/GPPD (optional description here) (as of Feb. 17, 2012, 07:34). |
| AMA | GPPD. Acronym Geek. February 17, 2012, 07:34. Available at: http://www.acronymgeek.com/GPPD. Accessed February 17, 2012, 07:34. |