| APA | MCI. (2012, February 10). In Acronym Geek. Retrieved 07:25, February 10, 2012, from http://www.acronymgeek.com/MCI |
| MLA | "MCI." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/MCI>. |
| MHRA | 'MCI', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/MCI> [accessed 10 February 2012] |
| Chicago | "MCI", http://www.acronymgeek.com/MCI (accessed February 10, 2012). |
| CBE/CSE | MCI [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/MCI. |
| Bluebook | MCI, http://www.acronymgeek.com/MCI (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, MCI, http://www.acronymgeek.com/MCI (optional description here) (as of Feb. 10, 2012, 07:25). |
| AMA | MCI. Acronym Geek. February 10, 2012, 07:25. Available at: http://www.acronymgeek.com/MCI. Accessed February 10, 2012, 07:25. |