| APA | GBT. (2012, February 14). In Acronym Geek. Retrieved 07:03, February 14, 2012, from http://www.acronymgeek.com/GBT |
| MLA | "GBT." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GBT>. |
| MHRA | 'GBT', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GBT> [accessed 14 February 2012] |
| Chicago | "GBT", http://www.acronymgeek.com/GBT (accessed February 14, 2012). |
| CBE/CSE | GBT [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GBT. |
| Bluebook | GBT, http://www.acronymgeek.com/GBT (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBT, http://www.acronymgeek.com/GBT (optional description here) (as of Feb. 14, 2012, 07:03). |
| AMA | GBT. Acronym Geek. February 14, 2012, 07:03. Available at: http://www.acronymgeek.com/GBT. Accessed February 14, 2012, 07:03. |