| APA | EI/WS. (2012, February 11). In Acronym Geek. Retrieved 11:56, February 11, 2012, from http://www.acronymgeek.com/EI/WS |
| MLA | "EI/WS." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EI/WS>. |
| MHRA | 'EI/WS', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EI/WS> [accessed 11 February 2012] |
| Chicago | "EI/WS", http://www.acronymgeek.com/EI/WS (accessed February 11, 2012). |
| CBE/CSE | EI/WS [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EI/WS. |
| Bluebook | EI/WS, http://www.acronymgeek.com/EI/WS (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EI/WS, http://www.acronymgeek.com/EI/WS (optional description here) (as of Feb. 11, 2012, 11:56). |
| AMA | EI/WS. Acronym Geek. February 11, 2012, 11:56. Available at: http://www.acronymgeek.com/EI/WS. Accessed February 11, 2012, 11:56. |