| APA | GCGG. (2012, February 14). In Acronym Geek. Retrieved 19:08, February 14, 2012, from http://www.acronymgeek.com/GCGG |
| MLA | "GCGG." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GCGG>. |
| MHRA | 'GCGG', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GCGG> [accessed 14 February 2012] |
| Chicago | "GCGG", http://www.acronymgeek.com/GCGG (accessed February 14, 2012). |
| CBE/CSE | GCGG [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GCGG. |
| Bluebook | GCGG, http://www.acronymgeek.com/GCGG (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GCGG, http://www.acronymgeek.com/GCGG (optional description here) (as of Feb. 14, 2012, 19:08). |
| AMA | GCGG. Acronym Geek. February 14, 2012, 19:08. Available at: http://www.acronymgeek.com/GCGG. Accessed February 14, 2012, 19:08. |