| APA | GPYC. (2012, February 16). In Acronym Geek. Retrieved 14:19, February 16, 2012, from http://www.acronymgeek.com/GPYC |
| MLA | "GPYC." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GPYC>. |
| MHRA | 'GPYC', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GPYC> [accessed 16 February 2012] |
| Chicago | "GPYC", http://www.acronymgeek.com/GPYC (accessed February 16, 2012). |
| CBE/CSE | GPYC [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GPYC. |
| Bluebook | GPYC, http://www.acronymgeek.com/GPYC (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GPYC, http://www.acronymgeek.com/GPYC (optional description here) (as of Feb. 16, 2012, 14:19). |
| AMA | GPYC. Acronym Geek. February 16, 2012, 14:19. Available at: http://www.acronymgeek.com/GPYC. Accessed February 16, 2012, 14:19. |