| APA | OYK. (2012, February 11). In Acronym Geek. Retrieved 22:46, February 11, 2012, from http://www.acronymgeek.com/OYK |
| MLA | "OYK." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/OYK>. |
| MHRA | 'OYK', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/OYK> [accessed 11 February 2012] |
| Chicago | "OYK", http://www.acronymgeek.com/OYK (accessed February 11, 2012). |
| CBE/CSE | OYK [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/OYK. |
| Bluebook | OYK, http://www.acronymgeek.com/OYK (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OYK, http://www.acronymgeek.com/OYK (optional description here) (as of Feb. 11, 2012, 22:46). |
| AMA | OYK. Acronym Geek. February 11, 2012, 22:46. Available at: http://www.acronymgeek.com/OYK. Accessed February 11, 2012, 22:46. |