| APA | ETWD. (2012, February 15). In Acronym Geek. Retrieved 19:11, February 15, 2012, from http://www.acronymgeek.com/ETWD |
| MLA | "ETWD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ETWD>. |
| MHRA | 'ETWD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ETWD> [accessed 15 February 2012] |
| Chicago | "ETWD", http://www.acronymgeek.com/ETWD (accessed February 15, 2012). |
| CBE/CSE | ETWD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ETWD. |
| Bluebook | ETWD, http://www.acronymgeek.com/ETWD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ETWD, http://www.acronymgeek.com/ETWD (optional description here) (as of Feb. 15, 2012, 19:11). |
| AMA | ETWD. Acronym Geek. February 15, 2012, 19:11. Available at: http://www.acronymgeek.com/ETWD. Accessed February 15, 2012, 19:11. |