| APA | DFY. (2012, February 11). In Acronym Geek. Retrieved 17:09, February 11, 2012, from http://www.acronymgeek.com/DFY |
| MLA | "DFY." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/DFY>. |
| MHRA | 'DFY', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/DFY> [accessed 11 February 2012] |
| Chicago | "DFY", http://www.acronymgeek.com/DFY (accessed February 11, 2012). |
| CBE/CSE | DFY [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/DFY. |
| Bluebook | DFY, http://www.acronymgeek.com/DFY (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DFY, http://www.acronymgeek.com/DFY (optional description here) (as of Feb. 11, 2012, 17:09). |
| AMA | DFY. Acronym Geek. February 11, 2012, 17:09. Available at: http://www.acronymgeek.com/DFY. Accessed February 11, 2012, 17:09. |