| APA | XNN. (2012, February 14). In Acronym Geek. Retrieved 08:02, February 14, 2012, from http://www.acronymgeek.com/XNN |
| MLA | "XNN." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/XNN>. |
| MHRA | 'XNN', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/XNN> [accessed 14 February 2012] |
| Chicago | "XNN", http://www.acronymgeek.com/XNN (accessed February 14, 2012). |
| CBE/CSE | XNN [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/XNN. |
| Bluebook | XNN, http://www.acronymgeek.com/XNN (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XNN, http://www.acronymgeek.com/XNN (optional description here) (as of Feb. 14, 2012, 08:02). |
| AMA | XNN. Acronym Geek. February 14, 2012, 08:02. Available at: http://www.acronymgeek.com/XNN. Accessed February 14, 2012, 08:02. |