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