| APA | CIOS. (2012, February 12). In Acronym Geek. Retrieved 12:53, February 12, 2012, from http://www.acronymgeek.com/CIOS |
| MLA | "CIOS." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/CIOS>. |
| MHRA | 'CIOS', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/CIOS> [accessed 12 February 2012] |
| Chicago | "CIOS", http://www.acronymgeek.com/CIOS (accessed February 12, 2012). |
| CBE/CSE | CIOS [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/CIOS. |
| Bluebook | CIOS, http://www.acronymgeek.com/CIOS (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CIOS, http://www.acronymgeek.com/CIOS (optional description here) (as of Feb. 12, 2012, 12:53). |
| AMA | CIOS. Acronym Geek. February 12, 2012, 12:53. Available at: http://www.acronymgeek.com/CIOS. Accessed February 12, 2012, 12:53. |