| APA | IVSO. (2012, February 16). In Acronym Geek. Retrieved 19:59, February 16, 2012, from http://www.acronymgeek.com/IVSO |
| MLA | "IVSO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/IVSO>. |
| MHRA | 'IVSO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/IVSO> [accessed 16 February 2012] |
| Chicago | "IVSO", http://www.acronymgeek.com/IVSO (accessed February 16, 2012). |
| CBE/CSE | IVSO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/IVSO. |
| Bluebook | IVSO, http://www.acronymgeek.com/IVSO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IVSO, http://www.acronymgeek.com/IVSO (optional description here) (as of Feb. 16, 2012, 19:59). |
| AMA | IVSO. Acronym Geek. February 16, 2012, 19:59. Available at: http://www.acronymgeek.com/IVSO. Accessed February 16, 2012, 19:59. |