| APA | ETDF. (2012, February 17). In Acronym Geek. Retrieved 02:55, February 17, 2012, from http://www.acronymgeek.com/ETDF |
| MLA | "ETDF." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ETDF>. |
| MHRA | 'ETDF', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ETDF> [accessed 17 February 2012] |
| Chicago | "ETDF", http://www.acronymgeek.com/ETDF (accessed February 17, 2012). |
| CBE/CSE | ETDF [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ETDF. |
| Bluebook | ETDF, http://www.acronymgeek.com/ETDF (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ETDF, http://www.acronymgeek.com/ETDF (optional description here) (as of Feb. 17, 2012, 02:55). |
| AMA | ETDF. Acronym Geek. February 17, 2012, 02:55. Available at: http://www.acronymgeek.com/ETDF. Accessed February 17, 2012, 02:55. |