| APA | XCAS. (2012, February 15). In Acronym Geek. Retrieved 21:49, February 15, 2012, from http://www.acronymgeek.com/XCAS |
| MLA | "XCAS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/XCAS>. |
| MHRA | 'XCAS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/XCAS> [accessed 15 February 2012] |
| Chicago | "XCAS", http://www.acronymgeek.com/XCAS (accessed February 15, 2012). |
| CBE/CSE | XCAS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/XCAS. |
| Bluebook | XCAS, http://www.acronymgeek.com/XCAS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XCAS, http://www.acronymgeek.com/XCAS (optional description here) (as of Feb. 15, 2012, 21:49). |
| AMA | XCAS. Acronym Geek. February 15, 2012, 21:49. Available at: http://www.acronymgeek.com/XCAS. Accessed February 15, 2012, 21:49. |