| APA | DYS. (2012, February 14). In Acronym Geek. Retrieved 04:06, February 14, 2012, from http://www.acronymgeek.com/DYS |
| MLA | "DYS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DYS>. |
| MHRA | 'DYS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DYS> [accessed 14 February 2012] |
| Chicago | "DYS", http://www.acronymgeek.com/DYS (accessed February 14, 2012). |
| CBE/CSE | DYS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DYS. |
| Bluebook | DYS, http://www.acronymgeek.com/DYS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DYS, http://www.acronymgeek.com/DYS (optional description here) (as of Feb. 14, 2012, 04:06). |
| AMA | DYS. Acronym Geek. February 14, 2012, 04:06. Available at: http://www.acronymgeek.com/DYS. Accessed February 14, 2012, 04:06. |