| APA | ONSO. (2012, February 16). In Acronym Geek. Retrieved 01:42, February 16, 2012, from http://www.acronymgeek.com/ONSO |
| MLA | "ONSO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ONSO>. |
| MHRA | 'ONSO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ONSO> [accessed 16 February 2012] |
| Chicago | "ONSO", http://www.acronymgeek.com/ONSO (accessed February 16, 2012). |
| CBE/CSE | ONSO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ONSO. |
| Bluebook | ONSO, http://www.acronymgeek.com/ONSO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ONSO, http://www.acronymgeek.com/ONSO (optional description here) (as of Feb. 16, 2012, 01:42). |
| AMA | ONSO. Acronym Geek. February 16, 2012, 01:42. Available at: http://www.acronymgeek.com/ONSO. Accessed February 16, 2012, 01:42. |