| APA | DFIU. (2012, February 16). In Acronym Geek. Retrieved 22:53, February 16, 2012, from http://www.acronymgeek.com/DFIU |
| MLA | "DFIU." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/DFIU>. |
| MHRA | 'DFIU', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/DFIU> [accessed 16 February 2012] |
| Chicago | "DFIU", http://www.acronymgeek.com/DFIU (accessed February 16, 2012). |
| CBE/CSE | DFIU [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/DFIU. |
| Bluebook | DFIU, http://www.acronymgeek.com/DFIU (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DFIU, http://www.acronymgeek.com/DFIU (optional description here) (as of Feb. 16, 2012, 22:53). |
| AMA | DFIU. Acronym Geek. February 16, 2012, 22:53. Available at: http://www.acronymgeek.com/DFIU. Accessed February 16, 2012, 22:53. |