| APA | NVO. (2012, February 14). In Acronym Geek. Retrieved 11:07, February 14, 2012, from http://www.acronymgeek.com/NVO |
| MLA | "NVO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NVO>. |
| MHRA | 'NVO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NVO> [accessed 14 February 2012] |
| Chicago | "NVO", http://www.acronymgeek.com/NVO (accessed February 14, 2012). |
| CBE/CSE | NVO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NVO. |
| Bluebook | NVO, http://www.acronymgeek.com/NVO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NVO, http://www.acronymgeek.com/NVO (optional description here) (as of Feb. 14, 2012, 11:07). |
| AMA | NVO. Acronym Geek. February 14, 2012, 11:07. Available at: http://www.acronymgeek.com/NVO. Accessed February 14, 2012, 11:07. |