| APA | GRYG. (2012, February 16). In Acronym Geek. Retrieved 23:42, February 16, 2012, from http://www.acronymgeek.com/GRYG |
| MLA | "GRYG." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GRYG>. |
| MHRA | 'GRYG', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GRYG> [accessed 16 February 2012] |
| Chicago | "GRYG", http://www.acronymgeek.com/GRYG (accessed February 16, 2012). |
| CBE/CSE | GRYG [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GRYG. |
| Bluebook | GRYG, http://www.acronymgeek.com/GRYG (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GRYG, http://www.acronymgeek.com/GRYG (optional description here) (as of Feb. 16, 2012, 23:42). |
| AMA | GRYG. Acronym Geek. February 16, 2012, 23:42. Available at: http://www.acronymgeek.com/GRYG. Accessed February 16, 2012, 23:42. |