| APA | DFU. (2012, February 14). In Acronym Geek. Retrieved 20:41, February 14, 2012, from http://www.acronymgeek.com/DFU |
| MLA | "DFU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DFU>. |
| MHRA | 'DFU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DFU> [accessed 14 February 2012] |
| Chicago | "DFU", http://www.acronymgeek.com/DFU (accessed February 14, 2012). |
| CBE/CSE | DFU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DFU. |
| Bluebook | DFU, http://www.acronymgeek.com/DFU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DFU, http://www.acronymgeek.com/DFU (optional description here) (as of Feb. 14, 2012, 20:41). |
| AMA | DFU. Acronym Geek. February 14, 2012, 20:41. Available at: http://www.acronymgeek.com/DFU. Accessed February 14, 2012, 20:41. |