| APA | DUCO. (2012, February 14). In Acronym Geek. Retrieved 18:25, February 14, 2012, from http://www.acronymgeek.com/DUCO |
| MLA | "DUCO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DUCO>. |
| MHRA | 'DUCO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DUCO> [accessed 14 February 2012] |
| Chicago | "DUCO", http://www.acronymgeek.com/DUCO (accessed February 14, 2012). |
| CBE/CSE | DUCO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DUCO. |
| Bluebook | DUCO, http://www.acronymgeek.com/DUCO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DUCO, http://www.acronymgeek.com/DUCO (optional description here) (as of Feb. 14, 2012, 18:25). |
| AMA | DUCO. Acronym Geek. February 14, 2012, 18:25. Available at: http://www.acronymgeek.com/DUCO. Accessed February 14, 2012, 18:25. |