| APA | 9X. (2012, February 11). In Acronym Geek. Retrieved 18:07, February 11, 2012, from http://www.acronymgeek.com/9X |
| MLA | "9X." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/9X>. |
| MHRA | '9X', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/9X> [accessed 11 February 2012] |
| Chicago | "9X", http://www.acronymgeek.com/9X (accessed February 11, 2012). |
| CBE/CSE | 9X [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/9X. |
| Bluebook | 9X, http://www.acronymgeek.com/9X (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 9X, http://www.acronymgeek.com/9X (optional description here) (as of Feb. 11, 2012, 18:07). |
| AMA | 9X. Acronym Geek. February 11, 2012, 18:07. Available at: http://www.acronymgeek.com/9X. Accessed February 11, 2012, 18:07. |