| APA | GBS. (2012, February 14). In Acronym Geek. Retrieved 10:09, February 14, 2012, from http://www.acronymgeek.com/GBS |
| MLA | "GBS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GBS>. |
| MHRA | 'GBS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GBS> [accessed 14 February 2012] |
| Chicago | "GBS", http://www.acronymgeek.com/GBS (accessed February 14, 2012). |
| CBE/CSE | GBS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GBS. |
| Bluebook | GBS, http://www.acronymgeek.com/GBS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBS, http://www.acronymgeek.com/GBS (optional description here) (as of Feb. 14, 2012, 10:09). |
| AMA | GBS. Acronym Geek. February 14, 2012, 10:09. Available at: http://www.acronymgeek.com/GBS. Accessed February 14, 2012, 10:09. |