| APA | ROIO. (2012, February 17). In Acronym Geek. Retrieved 02:15, February 17, 2012, from http://www.acronymgeek.com/ROIO |
| MLA | "ROIO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ROIO>. |
| MHRA | 'ROIO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ROIO> [accessed 17 February 2012] |
| Chicago | "ROIO", http://www.acronymgeek.com/ROIO (accessed February 17, 2012). |
| CBE/CSE | ROIO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ROIO. |
| Bluebook | ROIO, http://www.acronymgeek.com/ROIO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ROIO, http://www.acronymgeek.com/ROIO (optional description here) (as of Feb. 17, 2012, 02:15). |
| AMA | ROIO. Acronym Geek. February 17, 2012, 02:15. Available at: http://www.acronymgeek.com/ROIO. Accessed February 17, 2012, 02:15. |