| APA | OYY. (2012, February 11). In Acronym Geek. Retrieved 22:44, February 11, 2012, from http://www.acronymgeek.com/OYY |
| MLA | "OYY." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/OYY>. |
| MHRA | 'OYY', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/OYY> [accessed 11 February 2012] |
| Chicago | "OYY", http://www.acronymgeek.com/OYY (accessed February 11, 2012). |
| CBE/CSE | OYY [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/OYY. |
| Bluebook | OYY, http://www.acronymgeek.com/OYY (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OYY, http://www.acronymgeek.com/OYY (optional description here) (as of Feb. 11, 2012, 22:44). |
| AMA | OYY. Acronym Geek. February 11, 2012, 22:44. Available at: http://www.acronymgeek.com/OYY. Accessed February 11, 2012, 22:44. |