| APA | NXO. (2012, February 14). In Acronym Geek. Retrieved 11:04, February 14, 2012, from http://www.acronymgeek.com/NXO |
| MLA | "NXO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NXO>. |
| MHRA | 'NXO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NXO> [accessed 14 February 2012] |
| Chicago | "NXO", http://www.acronymgeek.com/NXO (accessed February 14, 2012). |
| CBE/CSE | NXO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NXO. |
| Bluebook | NXO, http://www.acronymgeek.com/NXO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NXO, http://www.acronymgeek.com/NXO (optional description here) (as of Feb. 14, 2012, 11:04). |
| AMA | NXO. Acronym Geek. February 14, 2012, 11:04. Available at: http://www.acronymgeek.com/NXO. Accessed February 14, 2012, 11:04. |