| APA | NOEI. (2012, February 16). In Acronym Geek. Retrieved 09:34, February 16, 2012, from http://www.acronymgeek.com/NOEI |
| MLA | "NOEI." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NOEI>. |
| MHRA | 'NOEI', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NOEI> [accessed 16 February 2012] |
| Chicago | "NOEI", http://www.acronymgeek.com/NOEI (accessed February 16, 2012). |
| CBE/CSE | NOEI [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NOEI. |
| Bluebook | NOEI, http://www.acronymgeek.com/NOEI (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NOEI, http://www.acronymgeek.com/NOEI (optional description here) (as of Feb. 16, 2012, 09:34). |
| AMA | NOEI. Acronym Geek. February 16, 2012, 09:34. Available at: http://www.acronymgeek.com/NOEI. Accessed February 16, 2012, 09:34. |