| APA | COLO.. (2012, February 12). In Acronym Geek. Retrieved 14:28, February 12, 2012, from http://www.acronymgeek.com/COLO. |
| MLA | "COLO.." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/COLO.>. |
| MHRA | 'COLO.', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/COLO.> [accessed 12 February 2012] |
| Chicago | "COLO.", http://www.acronymgeek.com/COLO. (accessed February 12, 2012). |
| CBE/CSE | COLO. [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/COLO.. |
| Bluebook | COLO., http://www.acronymgeek.com/COLO. (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, COLO., http://www.acronymgeek.com/COLO. (optional description here) (as of Feb. 12, 2012, 14:28). |
| AMA | COLO.. Acronym Geek. February 12, 2012, 14:28. Available at: http://www.acronymgeek.com/COLO.. Accessed February 12, 2012, 14:28. |