| APA | XLS. (2012, February 14). In Acronym Geek. Retrieved 19:25, February 14, 2012, from http://www.acronymgeek.com/XLS |
| MLA | "XLS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/XLS>. |
| MHRA | 'XLS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/XLS> [accessed 14 February 2012] |
| Chicago | "XLS", http://www.acronymgeek.com/XLS (accessed February 14, 2012). |
| CBE/CSE | XLS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/XLS. |
| Bluebook | XLS, http://www.acronymgeek.com/XLS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XLS, http://www.acronymgeek.com/XLS (optional description here) (as of Feb. 14, 2012, 19:25). |
| AMA | XLS. Acronym Geek. February 14, 2012, 19:25. Available at: http://www.acronymgeek.com/XLS. Accessed February 14, 2012, 19:25. |