| APA | DU. (2012, February 9). In Acronym Geek. Retrieved 16:49, February 9, 2012, from http://www.acronymgeek.com/DU |
| MLA | "DU." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/DU>. |
| MHRA | 'DU', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/DU> [accessed 9 February 2012] |
| Chicago | "DU", http://www.acronymgeek.com/DU (accessed February 9, 2012). |
| CBE/CSE | DU [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/DU. |
| Bluebook | DU, http://www.acronymgeek.com/DU (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DU, http://www.acronymgeek.com/DU (optional description here) (as of Feb. 9, 2012, 16:49). |
| AMA | DU. Acronym Geek. February 9, 2012, 16:49. Available at: http://www.acronymgeek.com/DU. Accessed February 9, 2012, 16:49. |