| APA | NNTO. (2012, February 16). In Acronym Geek. Retrieved 00:13, February 16, 2012, from http://www.acronymgeek.com/NNTO |
| MLA | "NNTO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NNTO>. |
| MHRA | 'NNTO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NNTO> [accessed 16 February 2012] |
| Chicago | "NNTO", http://www.acronymgeek.com/NNTO (accessed February 16, 2012). |
| CBE/CSE | NNTO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NNTO. |
| Bluebook | NNTO, http://www.acronymgeek.com/NNTO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NNTO, http://www.acronymgeek.com/NNTO (optional description here) (as of Feb. 16, 2012, 00:13). |
| AMA | NNTO. Acronym Geek. February 16, 2012, 00:13. Available at: http://www.acronymgeek.com/NNTO. Accessed February 16, 2012, 00:13. |