| APA | EW/IS. (2012, February 11). In Acronym Geek. Retrieved 17:23, February 11, 2012, from http://www.acronymgeek.com/EW/IS |
| MLA | "EW/IS." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EW/IS>. |
| MHRA | 'EW/IS', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EW/IS> [accessed 11 February 2012] |
| Chicago | "EW/IS", http://www.acronymgeek.com/EW/IS (accessed February 11, 2012). |
| CBE/CSE | EW/IS [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EW/IS. |
| Bluebook | EW/IS, http://www.acronymgeek.com/EW/IS (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EW/IS, http://www.acronymgeek.com/EW/IS (optional description here) (as of Feb. 11, 2012, 17:23). |
| AMA | EW/IS. Acronym Geek. February 11, 2012, 17:23. Available at: http://www.acronymgeek.com/EW/IS. Accessed February 11, 2012, 17:23. |