| APA | EVAO. (2012, February 17). In Acronym Geek. Retrieved 05:16, February 17, 2012, from http://www.acronymgeek.com/EVAO |
| MLA | "EVAO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/EVAO>. |
| MHRA | 'EVAO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/EVAO> [accessed 17 February 2012] |
| Chicago | "EVAO", http://www.acronymgeek.com/EVAO (accessed February 17, 2012). |
| CBE/CSE | EVAO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/EVAO. |
| Bluebook | EVAO, http://www.acronymgeek.com/EVAO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EVAO, http://www.acronymgeek.com/EVAO (optional description here) (as of Feb. 17, 2012, 05:16). |
| AMA | EVAO. Acronym Geek. February 17, 2012, 05:16. Available at: http://www.acronymgeek.com/EVAO. Accessed February 17, 2012, 05:16. |