| APA | ESS. (2012, February 13). In Acronym Geek. Retrieved 22:52, February 13, 2012, from http://www.acronymgeek.com/ESS |
| MLA | "ESS." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ESS>. |
| MHRA | 'ESS', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ESS> [accessed 13 February 2012] |
| Chicago | "ESS", http://www.acronymgeek.com/ESS (accessed February 13, 2012). |
| CBE/CSE | ESS [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ESS. |
| Bluebook | ESS, http://www.acronymgeek.com/ESS (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ESS, http://www.acronymgeek.com/ESS (optional description here) (as of Feb. 13, 2012, 22:52). |
| AMA | ESS. Acronym Geek. February 13, 2012, 22:52. Available at: http://www.acronymgeek.com/ESS. Accessed February 13, 2012, 22:52. |