| APA | GPYO. (2012, February 15). In Acronym Geek. Retrieved 10:06, February 15, 2012, from http://www.acronymgeek.com/GPYO |
| MLA | "GPYO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GPYO>. |
| MHRA | 'GPYO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GPYO> [accessed 15 February 2012] |
| Chicago | "GPYO", http://www.acronymgeek.com/GPYO (accessed February 15, 2012). |
| CBE/CSE | GPYO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GPYO. |
| Bluebook | GPYO, http://www.acronymgeek.com/GPYO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GPYO, http://www.acronymgeek.com/GPYO (optional description here) (as of Feb. 15, 2012, 10:06). |
| AMA | GPYO. Acronym Geek. February 15, 2012, 10:06. Available at: http://www.acronymgeek.com/GPYO. Accessed February 15, 2012, 10:06. |