| APA | RUOP. (2012, February 15). In Acronym Geek. Retrieved 19:10, February 15, 2012, from http://www.acronymgeek.com/RUOP |
| MLA | "RUOP." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/RUOP>. |
| MHRA | 'RUOP', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/RUOP> [accessed 15 February 2012] |
| Chicago | "RUOP", http://www.acronymgeek.com/RUOP (accessed February 15, 2012). |
| CBE/CSE | RUOP [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/RUOP. |
| Bluebook | RUOP, http://www.acronymgeek.com/RUOP (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, RUOP, http://www.acronymgeek.com/RUOP (optional description here) (as of Feb. 15, 2012, 19:10). |
| AMA | RUOP. Acronym Geek. February 15, 2012, 19:10. Available at: http://www.acronymgeek.com/RUOP. Accessed February 15, 2012, 19:10. |