| APA | SDX. (2012, February 14). In Acronym Geek. Retrieved 10:30, February 14, 2012, from http://www.acronymgeek.com/SDX |
| MLA | "SDX." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/SDX>. |
| MHRA | 'SDX', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/SDX> [accessed 14 February 2012] |
| Chicago | "SDX", http://www.acronymgeek.com/SDX (accessed February 14, 2012). |
| CBE/CSE | SDX [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/SDX. |
| Bluebook | SDX, http://www.acronymgeek.com/SDX (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SDX, http://www.acronymgeek.com/SDX (optional description here) (as of Feb. 14, 2012, 10:30). |
| AMA | SDX. Acronym Geek. February 14, 2012, 10:30. Available at: http://www.acronymgeek.com/SDX. Accessed February 14, 2012, 10:30. |