| APA | ERWS. (2012, February 15). In Acronym Geek. Retrieved 21:18, February 15, 2012, from http://www.acronymgeek.com/ERWS |
| MLA | "ERWS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ERWS>. |
| MHRA | 'ERWS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ERWS> [accessed 15 February 2012] |
| Chicago | "ERWS", http://www.acronymgeek.com/ERWS (accessed February 15, 2012). |
| CBE/CSE | ERWS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ERWS. |
| Bluebook | ERWS, http://www.acronymgeek.com/ERWS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ERWS, http://www.acronymgeek.com/ERWS (optional description here) (as of Feb. 15, 2012, 21:18). |
| AMA | ERWS. Acronym Geek. February 15, 2012, 21:18. Available at: http://www.acronymgeek.com/ERWS. Accessed February 15, 2012, 21:18. |