| APA | MDU. (2012, February 14). In Acronym Geek. Retrieved 06:36, February 14, 2012, from http://www.acronymgeek.com/MDU |
| MLA | "MDU." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/MDU>. |
| MHRA | 'MDU', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/MDU> [accessed 14 February 2012] |
| Chicago | "MDU", http://www.acronymgeek.com/MDU (accessed February 14, 2012). |
| CBE/CSE | MDU [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/MDU. |
| Bluebook | MDU, http://www.acronymgeek.com/MDU (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, MDU, http://www.acronymgeek.com/MDU (optional description here) (as of Feb. 14, 2012, 06:36). |
| AMA | MDU. Acronym Geek. February 14, 2012, 06:36. Available at: http://www.acronymgeek.com/MDU. Accessed February 14, 2012, 06:36. |