| APA | GCGB. (2012, February 17). In Acronym Geek. Retrieved 07:00, February 17, 2012, from http://www.acronymgeek.com/GCGB |
| MLA | "GCGB." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/GCGB>. |
| MHRA | 'GCGB', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/GCGB> [accessed 17 February 2012] |
| Chicago | "GCGB", http://www.acronymgeek.com/GCGB (accessed February 17, 2012). |
| CBE/CSE | GCGB [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/GCGB. |
| Bluebook | GCGB, http://www.acronymgeek.com/GCGB (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GCGB, http://www.acronymgeek.com/GCGB (optional description here) (as of Feb. 17, 2012, 07:00). |
| AMA | GCGB. Acronym Geek. February 17, 2012, 07:00. Available at: http://www.acronymgeek.com/GCGB. Accessed February 17, 2012, 07:00. |