| APA | UFDN. (2012, February 15). In Acronym Geek. Retrieved 08:18, February 15, 2012, from http://www.acronymgeek.com/UFDN |
| MLA | "UFDN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/UFDN>. |
| MHRA | 'UFDN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/UFDN> [accessed 15 February 2012] |
| Chicago | "UFDN", http://www.acronymgeek.com/UFDN (accessed February 15, 2012). |
| CBE/CSE | UFDN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/UFDN. |
| Bluebook | UFDN, http://www.acronymgeek.com/UFDN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UFDN, http://www.acronymgeek.com/UFDN (optional description here) (as of Feb. 15, 2012, 08:18). |
| AMA | UFDN. Acronym Geek. February 15, 2012, 08:18. Available at: http://www.acronymgeek.com/UFDN. Accessed February 15, 2012, 08:18. |