| APA | XCA. (2012, February 13). In Acronym Geek. Retrieved 23:27, February 13, 2012, from http://www.acronymgeek.com/XCA |
| MLA | "XCA." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/XCA>. |
| MHRA | 'XCA', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/XCA> [accessed 13 February 2012] |
| Chicago | "XCA", http://www.acronymgeek.com/XCA (accessed February 13, 2012). |
| CBE/CSE | XCA [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/XCA. |
| Bluebook | XCA, http://www.acronymgeek.com/XCA (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XCA, http://www.acronymgeek.com/XCA (optional description here) (as of Feb. 13, 2012, 23:27). |
| AMA | XCA. Acronym Geek. February 13, 2012, 23:27. Available at: http://www.acronymgeek.com/XCA. Accessed February 13, 2012, 23:27. |