| APA | ES-ES. (2012, February 12). In Acronym Geek. Retrieved 12:10, February 12, 2012, from http://www.acronymgeek.com/ES-ES |
| MLA | "ES-ES." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/ES-ES>. |
| MHRA | 'ES-ES', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/ES-ES> [accessed 12 February 2012] |
| Chicago | "ES-ES", http://www.acronymgeek.com/ES-ES (accessed February 12, 2012). |
| CBE/CSE | ES-ES [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/ES-ES. |
| Bluebook | ES-ES, http://www.acronymgeek.com/ES-ES (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ES-ES, http://www.acronymgeek.com/ES-ES (optional description here) (as of Feb. 12, 2012, 12:10). |
| AMA | ES-ES. Acronym Geek. February 12, 2012, 12:10. Available at: http://www.acronymgeek.com/ES-ES. Accessed February 12, 2012, 12:10. |