| APA | ETWN. (2012, February 16). In Acronym Geek. Retrieved 06:50, February 16, 2012, from http://www.acronymgeek.com/ETWN |
| MLA | "ETWN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ETWN>. |
| MHRA | 'ETWN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ETWN> [accessed 16 February 2012] |
| Chicago | "ETWN", http://www.acronymgeek.com/ETWN (accessed February 16, 2012). |
| CBE/CSE | ETWN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ETWN. |
| Bluebook | ETWN, http://www.acronymgeek.com/ETWN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ETWN, http://www.acronymgeek.com/ETWN (optional description here) (as of Feb. 16, 2012, 06:50). |
| AMA | ETWN. Acronym Geek. February 16, 2012, 06:50. Available at: http://www.acronymgeek.com/ETWN. Accessed February 16, 2012, 06:50. |