| APA | GBIS. (2012, February 15). In Acronym Geek. Retrieved 07:29, February 15, 2012, from http://www.acronymgeek.com/GBIS |
| MLA | "GBIS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GBIS>. |
| MHRA | 'GBIS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GBIS> [accessed 15 February 2012] |
| Chicago | "GBIS", http://www.acronymgeek.com/GBIS (accessed February 15, 2012). |
| CBE/CSE | GBIS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GBIS. |
| Bluebook | GBIS, http://www.acronymgeek.com/GBIS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBIS, http://www.acronymgeek.com/GBIS (optional description here) (as of Feb. 15, 2012, 07:29). |
| AMA | GBIS. Acronym Geek. February 15, 2012, 07:29. Available at: http://www.acronymgeek.com/GBIS. Accessed February 15, 2012, 07:29. |