| APA | NNFO. (2012, February 15). In Acronym Geek. Retrieved 23:59, February 15, 2012, from http://www.acronymgeek.com/NNFO |
| MLA | "NNFO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/NNFO>. |
| MHRA | 'NNFO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/NNFO> [accessed 15 February 2012] |
| Chicago | "NNFO", http://www.acronymgeek.com/NNFO (accessed February 15, 2012). |
| CBE/CSE | NNFO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/NNFO. |
| Bluebook | NNFO, http://www.acronymgeek.com/NNFO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NNFO, http://www.acronymgeek.com/NNFO (optional description here) (as of Feb. 15, 2012, 23:59). |
| AMA | NNFO. Acronym Geek. February 15, 2012, 23:59. Available at: http://www.acronymgeek.com/NNFO. Accessed February 15, 2012, 23:59. |