| APA | EWOI. (2012, February 15). In Acronym Geek. Retrieved 17:16, February 15, 2012, from http://www.acronymgeek.com/EWOI |
| MLA | "EWOI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/EWOI>. |
| MHRA | 'EWOI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/EWOI> [accessed 15 February 2012] |
| Chicago | "EWOI", http://www.acronymgeek.com/EWOI (accessed February 15, 2012). |
| CBE/CSE | EWOI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/EWOI. |
| Bluebook | EWOI, http://www.acronymgeek.com/EWOI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EWOI, http://www.acronymgeek.com/EWOI (optional description here) (as of Feb. 15, 2012, 17:16). |
| AMA | EWOI. Acronym Geek. February 15, 2012, 17:16. Available at: http://www.acronymgeek.com/EWOI. Accessed February 15, 2012, 17:16. |