| APA | DEFA. (2012, February 15). In Acronym Geek. Retrieved 04:25, February 15, 2012, from http://www.acronymgeek.com/DEFA |
| MLA | "DEFA." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DEFA>. |
| MHRA | 'DEFA', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DEFA> [accessed 15 February 2012] |
| Chicago | "DEFA", http://www.acronymgeek.com/DEFA (accessed February 15, 2012). |
| CBE/CSE | DEFA [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DEFA. |
| Bluebook | DEFA, http://www.acronymgeek.com/DEFA (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DEFA, http://www.acronymgeek.com/DEFA (optional description here) (as of Feb. 15, 2012, 04:25). |
| AMA | DEFA. Acronym Geek. February 15, 2012, 04:25. Available at: http://www.acronymgeek.com/DEFA. Accessed February 15, 2012, 04:25. |