| APA | ERWI. (2012, February 17). In Acronym Geek. Retrieved 07:11, February 17, 2012, from http://www.acronymgeek.com/ERWI |
| MLA | "ERWI." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ERWI>. |
| MHRA | 'ERWI', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ERWI> [accessed 17 February 2012] |
| Chicago | "ERWI", http://www.acronymgeek.com/ERWI (accessed February 17, 2012). |
| CBE/CSE | ERWI [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ERWI. |
| Bluebook | ERWI, http://www.acronymgeek.com/ERWI (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ERWI, http://www.acronymgeek.com/ERWI (optional description here) (as of Feb. 17, 2012, 07:11). |
| AMA | ERWI. Acronym Geek. February 17, 2012, 07:11. Available at: http://www.acronymgeek.com/ERWI. Accessed February 17, 2012, 07:11. |