| APA | ESY. (2012, February 12). In Acronym Geek. Retrieved 07:07, February 12, 2012, from http://www.acronymgeek.com/ESY |
| MLA | "ESY." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/ESY>. |
| MHRA | 'ESY', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/ESY> [accessed 12 February 2012] |
| Chicago | "ESY", http://www.acronymgeek.com/ESY (accessed February 12, 2012). |
| CBE/CSE | ESY [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/ESY. |
| Bluebook | ESY, http://www.acronymgeek.com/ESY (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ESY, http://www.acronymgeek.com/ESY (optional description here) (as of Feb. 12, 2012, 07:07). |
| AMA | ESY. Acronym Geek. February 12, 2012, 07:07. Available at: http://www.acronymgeek.com/ESY. Accessed February 12, 2012, 07:07. |