| APA | GBGT. (2012, February 15). In Acronym Geek. Retrieved 14:04, February 15, 2012, from http://www.acronymgeek.com/GBGT |
| MLA | "GBGT." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GBGT>. |
| MHRA | 'GBGT', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GBGT> [accessed 15 February 2012] |
| Chicago | "GBGT", http://www.acronymgeek.com/GBGT (accessed February 15, 2012). |
| CBE/CSE | GBGT [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GBGT. |
| Bluebook | GBGT, http://www.acronymgeek.com/GBGT (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBGT, http://www.acronymgeek.com/GBGT (optional description here) (as of Feb. 15, 2012, 14:04). |
| AMA | GBGT. Acronym Geek. February 15, 2012, 14:04. Available at: http://www.acronymgeek.com/GBGT. Accessed February 15, 2012, 14:04. |