| APA | ORC. (2012, February 14). In Acronym Geek. Retrieved 02:23, February 14, 2012, from http://www.acronymgeek.com/ORC |
| MLA | "ORC." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ORC>. |
| MHRA | 'ORC', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ORC> [accessed 14 February 2012] |
| Chicago | "ORC", http://www.acronymgeek.com/ORC (accessed February 14, 2012). |
| CBE/CSE | ORC [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ORC. |
| Bluebook | ORC, http://www.acronymgeek.com/ORC (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ORC, http://www.acronymgeek.com/ORC (optional description here) (as of Feb. 14, 2012, 02:23). |
| AMA | ORC. Acronym Geek. February 14, 2012, 02:23. Available at: http://www.acronymgeek.com/ORC. Accessed February 14, 2012, 02:23. |