| APA | GBD. (2012, February 14). In Acronym Geek. Retrieved 10:05, February 14, 2012, from http://www.acronymgeek.com/GBD |
| MLA | "GBD." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GBD>. |
| MHRA | 'GBD', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GBD> [accessed 14 February 2012] |
| Chicago | "GBD", http://www.acronymgeek.com/GBD (accessed February 14, 2012). |
| CBE/CSE | GBD [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GBD. |
| Bluebook | GBD, http://www.acronymgeek.com/GBD (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBD, http://www.acronymgeek.com/GBD (optional description here) (as of Feb. 14, 2012, 10:05). |
| AMA | GBD. Acronym Geek. February 14, 2012, 10:05. Available at: http://www.acronymgeek.com/GBD. Accessed February 14, 2012, 10:05. |