| APA | DOU. (2012, February 14). In Acronym Geek. Retrieved 20:40, February 14, 2012, from http://www.acronymgeek.com/DOU |
| MLA | "DOU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DOU>. |
| MHRA | 'DOU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DOU> [accessed 14 February 2012] |
| Chicago | "DOU", http://www.acronymgeek.com/DOU (accessed February 14, 2012). |
| CBE/CSE | DOU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DOU. |
| Bluebook | DOU, http://www.acronymgeek.com/DOU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DOU, http://www.acronymgeek.com/DOU (optional description here) (as of Feb. 14, 2012, 20:40). |
| AMA | DOU. Acronym Geek. February 14, 2012, 20:40. Available at: http://www.acronymgeek.com/DOU. Accessed February 14, 2012, 20:40. |