| APA | ETWF. (2012, February 17). In Acronym Geek. Retrieved 01:51, February 17, 2012, from http://www.acronymgeek.com/ETWF |
| MLA | "ETWF." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ETWF>. |
| MHRA | 'ETWF', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ETWF> [accessed 17 February 2012] |
| Chicago | "ETWF", http://www.acronymgeek.com/ETWF (accessed February 17, 2012). |
| CBE/CSE | ETWF [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ETWF. |
| Bluebook | ETWF, http://www.acronymgeek.com/ETWF (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ETWF, http://www.acronymgeek.com/ETWF (optional description here) (as of Feb. 17, 2012, 01:51). |
| AMA | ETWF. Acronym Geek. February 17, 2012, 01:51. Available at: http://www.acronymgeek.com/ETWF. Accessed February 17, 2012, 01:51. |