| APA | XLO. (2012, February 14). In Acronym Geek. Retrieved 06:43, February 14, 2012, from http://www.acronymgeek.com/XLO |
| MLA | "XLO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/XLO>. |
| MHRA | 'XLO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/XLO> [accessed 14 February 2012] |
| Chicago | "XLO", http://www.acronymgeek.com/XLO (accessed February 14, 2012). |
| CBE/CSE | XLO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/XLO. |
| Bluebook | XLO, http://www.acronymgeek.com/XLO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XLO, http://www.acronymgeek.com/XLO (optional description here) (as of Feb. 14, 2012, 06:43). |
| AMA | XLO. Acronym Geek. February 14, 2012, 06:43. Available at: http://www.acronymgeek.com/XLO. Accessed February 14, 2012, 06:43. |