| APA | GPP. (2012, February 14). In Acronym Geek. Retrieved 07:51, February 14, 2012, from http://www.acronymgeek.com/GPP |
| MLA | "GPP." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GPP>. |
| MHRA | 'GPP', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GPP> [accessed 14 February 2012] |
| Chicago | "GPP", http://www.acronymgeek.com/GPP (accessed February 14, 2012). |
| CBE/CSE | GPP [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GPP. |
| Bluebook | GPP, http://www.acronymgeek.com/GPP (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GPP, http://www.acronymgeek.com/GPP (optional description here) (as of Feb. 14, 2012, 07:51). |
| AMA | GPP. Acronym Geek. February 14, 2012, 07:51. Available at: http://www.acronymgeek.com/GPP. Accessed February 14, 2012, 07:51. |