| APA | D4CO. (2012, February 17). In Acronym Geek. Retrieved 01:44, February 17, 2012, from http://www.acronymgeek.com/D4CO |
| MLA | "D4CO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/D4CO>. |
| MHRA | 'D4CO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/D4CO> [accessed 17 February 2012] |
| Chicago | "D4CO", http://www.acronymgeek.com/D4CO (accessed February 17, 2012). |
| CBE/CSE | D4CO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/D4CO. |
| Bluebook | D4CO, http://www.acronymgeek.com/D4CO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, D4CO, http://www.acronymgeek.com/D4CO (optional description here) (as of Feb. 17, 2012, 01:44). |
| AMA | D4CO. Acronym Geek. February 17, 2012, 01:44. Available at: http://www.acronymgeek.com/D4CO. Accessed February 17, 2012, 01:44. |