| APA | GCGR. (2012, February 17). In Acronym Geek. Retrieved 02:09, February 17, 2012, from http://www.acronymgeek.com/GCGR |
| MLA | "GCGR." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/GCGR>. |
| MHRA | 'GCGR', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/GCGR> [accessed 17 February 2012] |
| Chicago | "GCGR", http://www.acronymgeek.com/GCGR (accessed February 17, 2012). |
| CBE/CSE | GCGR [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/GCGR. |
| Bluebook | GCGR, http://www.acronymgeek.com/GCGR (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GCGR, http://www.acronymgeek.com/GCGR (optional description here) (as of Feb. 17, 2012, 02:09). |
| AMA | GCGR. Acronym Geek. February 17, 2012, 02:09. Available at: http://www.acronymgeek.com/GCGR. Accessed February 17, 2012, 02:09. |