| APA | DR&O. (2012, February 11). In Acronym Geek. Retrieved 17:21, February 11, 2012, from http://www.acronymgeek.com/DR&O |
| MLA | "DR&O." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/DR&O>. |
| MHRA | 'DR&O', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/DR&O> [accessed 11 February 2012] |
| Chicago | "DR&O", http://www.acronymgeek.com/DR&O (accessed February 11, 2012). |
| CBE/CSE | DR&O [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/DR&O. |
| Bluebook | DR&O, http://www.acronymgeek.com/DR&O (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DR&O, http://www.acronymgeek.com/DR&O (optional description here) (as of Feb. 11, 2012, 17:21). |
| AMA | DR&O. Acronym Geek. February 11, 2012, 17:21. Available at: http://www.acronymgeek.com/DR&O. Accessed February 11, 2012, 17:21. |