| APA | DEF. (2012, February 14). In Acronym Geek. Retrieved 19:36, February 14, 2012, from http://www.acronymgeek.com/DEF |
| MLA | "DEF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DEF>. |
| MHRA | 'DEF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DEF> [accessed 14 February 2012] |
| Chicago | "DEF", http://www.acronymgeek.com/DEF (accessed February 14, 2012). |
| CBE/CSE | DEF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DEF. |
| Bluebook | DEF, http://www.acronymgeek.com/DEF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DEF, http://www.acronymgeek.com/DEF (optional description here) (as of Feb. 14, 2012, 19:36). |
| AMA | DEF. Acronym Geek. February 14, 2012, 19:36. Available at: http://www.acronymgeek.com/DEF. Accessed February 14, 2012, 19:36. |