| APA | ETDU. (2012, February 15). In Acronym Geek. Retrieved 01:27, February 15, 2012, from http://www.acronymgeek.com/ETDU |
| MLA | "ETDU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/ETDU>. |
| MHRA | 'ETDU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/ETDU> [accessed 15 February 2012] |
| Chicago | "ETDU", http://www.acronymgeek.com/ETDU (accessed February 15, 2012). |
| CBE/CSE | ETDU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/ETDU. |
| Bluebook | ETDU, http://www.acronymgeek.com/ETDU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ETDU, http://www.acronymgeek.com/ETDU (optional description here) (as of Feb. 15, 2012, 01:27). |
| AMA | ETDU. Acronym Geek. February 15, 2012, 01:27. Available at: http://www.acronymgeek.com/ETDU. Accessed February 15, 2012, 01:27. |