| APA | OYDN. (2012, February 15). In Acronym Geek. Retrieved 17:53, February 15, 2012, from http://www.acronymgeek.com/OYDN |
| MLA | "OYDN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/OYDN>. |
| MHRA | 'OYDN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/OYDN> [accessed 15 February 2012] |
| Chicago | "OYDN", http://www.acronymgeek.com/OYDN (accessed February 15, 2012). |
| CBE/CSE | OYDN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/OYDN. |
| Bluebook | OYDN, http://www.acronymgeek.com/OYDN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OYDN, http://www.acronymgeek.com/OYDN (optional description here) (as of Feb. 15, 2012, 17:53). |
| AMA | OYDN. Acronym Geek. February 15, 2012, 17:53. Available at: http://www.acronymgeek.com/OYDN. Accessed February 15, 2012, 17:53. |