| APA | SRDO. (2012, February 14). In Acronym Geek. Retrieved 23:48, February 14, 2012, from http://www.acronymgeek.com/SRDO |
| MLA | "SRDO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/SRDO>. |
| MHRA | 'SRDO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/SRDO> [accessed 14 February 2012] |
| Chicago | "SRDO", http://www.acronymgeek.com/SRDO (accessed February 14, 2012). |
| CBE/CSE | SRDO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/SRDO. |
| Bluebook | SRDO, http://www.acronymgeek.com/SRDO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SRDO, http://www.acronymgeek.com/SRDO (optional description here) (as of Feb. 14, 2012, 23:48). |
| AMA | SRDO. Acronym Geek. February 14, 2012, 23:48. Available at: http://www.acronymgeek.com/SRDO. Accessed February 14, 2012, 23:48. |