| APA | IBS. (2012, February 8). In Acronym Geek. Retrieved 12:12, February 8, 2012, from http://www.acronymgeek.com/IBS |
| MLA | "IBS." Acronym Geek. (2012). Acronym Geek. 8 Feb 2012 <http://www.acronymgeek.com/IBS>. |
| MHRA | 'IBS', Acronym Geek, 8 February 2012, <http://www.acronymgeek.com/IBS> [accessed 8 February 2012] |
| Chicago | "IBS", http://www.acronymgeek.com/IBS (accessed February 8, 2012). |
| CBE/CSE | IBS [Internet]. Acronym Geek; 2012 Feb 8 [cited 2012 Feb 8]. Available from: http://www.acronymgeek.com/IBS. |
| Bluebook | IBS, http://www.acronymgeek.com/IBS (last visited February 8, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IBS, http://www.acronymgeek.com/IBS (optional description here) (as of Feb. 8, 2012, 12:12). |
| AMA | IBS. Acronym Geek. February 8, 2012, 12:12. Available at: http://www.acronymgeek.com/IBS. Accessed February 8, 2012, 12:12. |