| APA | GBI. (2012, February 15). In Acronym Geek. Retrieved 03:36, February 15, 2012, from http://www.acronymgeek.com/GBI |
| MLA | "GBI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GBI>. |
| MHRA | 'GBI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GBI> [accessed 15 February 2012] |
| Chicago | "GBI", http://www.acronymgeek.com/GBI (accessed February 15, 2012). |
| CBE/CSE | GBI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GBI. |
| Bluebook | GBI, http://www.acronymgeek.com/GBI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBI, http://www.acronymgeek.com/GBI (optional description here) (as of Feb. 15, 2012, 03:36). |
| AMA | GBI. Acronym Geek. February 15, 2012, 03:36. Available at: http://www.acronymgeek.com/GBI. Accessed February 15, 2012, 03:36. |