| APA | OYCO. (2012, February 16). In Acronym Geek. Retrieved 02:16, February 16, 2012, from http://www.acronymgeek.com/OYCO |
| MLA | "OYCO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OYCO>. |
| MHRA | 'OYCO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OYCO> [accessed 16 February 2012] |
| Chicago | "OYCO", http://www.acronymgeek.com/OYCO (accessed February 16, 2012). |
| CBE/CSE | OYCO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OYCO. |
| Bluebook | OYCO, http://www.acronymgeek.com/OYCO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OYCO, http://www.acronymgeek.com/OYCO (optional description here) (as of Feb. 16, 2012, 02:16). |
| AMA | OYCO. Acronym Geek. February 16, 2012, 02:16. Available at: http://www.acronymgeek.com/OYCO. Accessed February 16, 2012, 02:16. |