| APA | OCEC. (2012, February 14). In Acronym Geek. Retrieved 16:59, February 14, 2012, from http://www.acronymgeek.com/OCEC |
| MLA | "OCEC." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OCEC>. |
| MHRA | 'OCEC', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OCEC> [accessed 14 February 2012] |
| Chicago | "OCEC", http://www.acronymgeek.com/OCEC (accessed February 14, 2012). |
| CBE/CSE | OCEC [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OCEC. |
| Bluebook | OCEC, http://www.acronymgeek.com/OCEC (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OCEC, http://www.acronymgeek.com/OCEC (optional description here) (as of Feb. 14, 2012, 16:59). |
| AMA | OCEC. Acronym Geek. February 14, 2012, 16:59. Available at: http://www.acronymgeek.com/OCEC. Accessed February 14, 2012, 16:59. |