| APA | M9. (2012, February 11). In Acronym Geek. Retrieved 18:07, February 11, 2012, from http://www.acronymgeek.com/M9 |
| MLA | "M9." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/M9>. |
| MHRA | 'M9', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/M9> [accessed 11 February 2012] |
| Chicago | "M9", http://www.acronymgeek.com/M9 (accessed February 11, 2012). |
| CBE/CSE | M9 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/M9. |
| Bluebook | M9, http://www.acronymgeek.com/M9 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, M9, http://www.acronymgeek.com/M9 (optional description here) (as of Feb. 11, 2012, 18:07). |
| AMA | M9. Acronym Geek. February 11, 2012, 18:07. Available at: http://www.acronymgeek.com/M9. Accessed February 11, 2012, 18:07. |