| APA | COI. (2012, February 9). In Acronym Geek. Retrieved 21:08, February 9, 2012, from http://www.acronymgeek.com/COI |
| MLA | "COI." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/COI>. |
| MHRA | 'COI', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/COI> [accessed 9 February 2012] |
| Chicago | "COI", http://www.acronymgeek.com/COI (accessed February 9, 2012). |
| CBE/CSE | COI [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/COI. |
| Bluebook | COI, http://www.acronymgeek.com/COI (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, COI, http://www.acronymgeek.com/COI (optional description here) (as of Feb. 9, 2012, 21:08). |
| AMA | COI. Acronym Geek. February 9, 2012, 21:08. Available at: http://www.acronymgeek.com/COI. Accessed February 9, 2012, 21:08. |