| APA | GPRI. (2012, February 16). In Acronym Geek. Retrieved 08:36, February 16, 2012, from http://www.acronymgeek.com/GPRI |
| MLA | "GPRI." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GPRI>. |
| MHRA | 'GPRI', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GPRI> [accessed 16 February 2012] |
| Chicago | "GPRI", http://www.acronymgeek.com/GPRI (accessed February 16, 2012). |
| CBE/CSE | GPRI [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GPRI. |
| Bluebook | GPRI, http://www.acronymgeek.com/GPRI (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GPRI, http://www.acronymgeek.com/GPRI (optional description here) (as of Feb. 16, 2012, 08:36). |
| AMA | GPRI. Acronym Geek. February 16, 2012, 08:36. Available at: http://www.acronymgeek.com/GPRI. Accessed February 16, 2012, 08:36. |