| APA | CZOS. (2012, February 15). In Acronym Geek. Retrieved 09:54, February 15, 2012, from http://www.acronymgeek.com/CZOS |
| MLA | "CZOS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/CZOS>. |
| MHRA | 'CZOS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/CZOS> [accessed 15 February 2012] |
| Chicago | "CZOS", http://www.acronymgeek.com/CZOS (accessed February 15, 2012). |
| CBE/CSE | CZOS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/CZOS. |
| Bluebook | CZOS, http://www.acronymgeek.com/CZOS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CZOS, http://www.acronymgeek.com/CZOS (optional description here) (as of Feb. 15, 2012, 09:54). |
| AMA | CZOS. Acronym Geek. February 15, 2012, 09:54. Available at: http://www.acronymgeek.com/CZOS. Accessed February 15, 2012, 09:54. |