| APA | XBUP. (2012, February 15). In Acronym Geek. Retrieved 14:03, February 15, 2012, from http://www.acronymgeek.com/XBUP |
| MLA | "XBUP." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/XBUP>. |
| MHRA | 'XBUP', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/XBUP> [accessed 15 February 2012] |
| Chicago | "XBUP", http://www.acronymgeek.com/XBUP (accessed February 15, 2012). |
| CBE/CSE | XBUP [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/XBUP. |
| Bluebook | XBUP, http://www.acronymgeek.com/XBUP (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XBUP, http://www.acronymgeek.com/XBUP (optional description here) (as of Feb. 15, 2012, 14:03). |
| AMA | XBUP. Acronym Geek. February 15, 2012, 14:03. Available at: http://www.acronymgeek.com/XBUP. Accessed February 15, 2012, 14:03. |