| APA | FFDU. (2012, February 14). In Acronym Geek. Retrieved 08:14, February 14, 2012, from http://www.acronymgeek.com/FFDU |
| MLA | "FFDU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/FFDU>. |
| MHRA | 'FFDU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/FFDU> [accessed 14 February 2012] |
| Chicago | "FFDU", http://www.acronymgeek.com/FFDU (accessed February 14, 2012). |
| CBE/CSE | FFDU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/FFDU. |
| Bluebook | FFDU, http://www.acronymgeek.com/FFDU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FFDU, http://www.acronymgeek.com/FFDU (optional description here) (as of Feb. 14, 2012, 08:14). |
| AMA | FFDU. Acronym Geek. February 14, 2012, 08:14. Available at: http://www.acronymgeek.com/FFDU. Accessed February 14, 2012, 08:14. |