| APA | ESOA. (2012, February 17). In Acronym Geek. Retrieved 01:10, February 17, 2012, from http://www.acronymgeek.com/ESOA |
| MLA | "ESOA." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ESOA>. |
| MHRA | 'ESOA', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ESOA> [accessed 17 February 2012] |
| Chicago | "ESOA", http://www.acronymgeek.com/ESOA (accessed February 17, 2012). |
| CBE/CSE | ESOA [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ESOA. |
| Bluebook | ESOA, http://www.acronymgeek.com/ESOA (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ESOA, http://www.acronymgeek.com/ESOA (optional description here) (as of Feb. 17, 2012, 01:10). |
| AMA | ESOA. Acronym Geek. February 17, 2012, 01:10. Available at: http://www.acronymgeek.com/ESOA. Accessed February 17, 2012, 01:10. |