| APA | NFOP. (2012, February 15). In Acronym Geek. Retrieved 12:09, February 15, 2012, from http://www.acronymgeek.com/NFOP |
| MLA | "NFOP." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/NFOP>. |
| MHRA | 'NFOP', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/NFOP> [accessed 15 February 2012] |
| Chicago | "NFOP", http://www.acronymgeek.com/NFOP (accessed February 15, 2012). |
| CBE/CSE | NFOP [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/NFOP. |
| Bluebook | NFOP, http://www.acronymgeek.com/NFOP (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NFOP, http://www.acronymgeek.com/NFOP (optional description here) (as of Feb. 15, 2012, 12:09). |
| AMA | NFOP. Acronym Geek. February 15, 2012, 12:09. Available at: http://www.acronymgeek.com/NFOP. Accessed February 15, 2012, 12:09. |