| APA | MSOS. (2012, February 14). In Acronym Geek. Retrieved 12:33, February 14, 2012, from http://www.acronymgeek.com/MSOS |
| MLA | "MSOS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/MSOS>. |
| MHRA | 'MSOS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/MSOS> [accessed 14 February 2012] |
| Chicago | "MSOS", http://www.acronymgeek.com/MSOS (accessed February 14, 2012). |
| CBE/CSE | MSOS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/MSOS. |
| Bluebook | MSOS, http://www.acronymgeek.com/MSOS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, MSOS, http://www.acronymgeek.com/MSOS (optional description here) (as of Feb. 14, 2012, 12:33). |
| AMA | MSOS. Acronym Geek. February 14, 2012, 12:33. Available at: http://www.acronymgeek.com/MSOS. Accessed February 14, 2012, 12:33. |