| APA | GBIU. (2012, February 15). In Acronym Geek. Retrieved 12:35, February 15, 2012, from http://www.acronymgeek.com/GBIU |
| MLA | "GBIU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GBIU>. |
| MHRA | 'GBIU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GBIU> [accessed 15 February 2012] |
| Chicago | "GBIU", http://www.acronymgeek.com/GBIU (accessed February 15, 2012). |
| CBE/CSE | GBIU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GBIU. |
| Bluebook | GBIU, http://www.acronymgeek.com/GBIU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBIU, http://www.acronymgeek.com/GBIU (optional description here) (as of Feb. 15, 2012, 12:35). |
| AMA | GBIU. Acronym Geek. February 15, 2012, 12:35. Available at: http://www.acronymgeek.com/GBIU. Accessed February 15, 2012, 12:35. |