| APA | CEO. (2012, February 9). In Acronym Geek. Retrieved 18:30, February 9, 2012, from http://www.acronymgeek.com/CEO |
| MLA | "CEO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/CEO>. |
| MHRA | 'CEO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/CEO> [accessed 9 February 2012] |
| Chicago | "CEO", http://www.acronymgeek.com/CEO (accessed February 9, 2012). |
| CBE/CSE | CEO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/CEO. |
| Bluebook | CEO, http://www.acronymgeek.com/CEO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CEO, http://www.acronymgeek.com/CEO (optional description here) (as of Feb. 9, 2012, 18:30). |
| AMA | CEO. Acronym Geek. February 9, 2012, 18:30. Available at: http://www.acronymgeek.com/CEO. Accessed February 9, 2012, 18:30. |